Frequently Asked Questions

No longer possible.

With the recent changes on Microsoft servers, the IMAP protocol for Outlook/Hotmail/Live/MSN/etc. accounts can be unusable for some external applications at this time.

Please set up your account as Exchange.

• Download the attached registry file in this article.
• Run it while eM Client is still closed and confirm the changes it will make.

If you'd like to add the needed registry key manually instead of using our provided file:

• Run Regedit
• Go to Computer\HKEY_CURRENT_USER\Software\eM Client
• Add the DWORD item AllowExchangeOnlineOAuth and set its value to 0
• Then run eM Client 

To set up the actual account:

• Go to Menu > Accounts.
• Click the '+Add account' button.
• In the New Account window select Mail > Exchange.
• Use your Microsoft mail address for both the Email and Username fields. 
• Finish the rest of the setup
• Delete or disable your previous IMAP setup.

NOTES: Detection of Exchange setup might take longer than usual, but unless an error pops up, let the configuration finish.

If you use 2-factor verification, you might need to create and use an App password for eM Client.

Exchange Web Services protocol will synchronize your Mail, Contacts, and Calendar - you do not need to worry about any data loss because this information is saved on your mail server.

If you upgraded from eM Client 6, your data hasn't been actually lost - you just accidentally skipped database migration.

Since eM Client 7, we have created a completely new database structure for more efficient data storage, so the data cannot be just loaded from the old database as was possible in the past.

To migrate your data manually please use the Menu > File > Import.. > Import from eM Client 6 option.

If you upgraded from eM Client 7, the database should be upgraded automatically, since eM Client 8 keeps to the same model and can upgrade these files automatically, no migration is needed.

In this case, the issue might be with your storage location - make sure that the storage folder in Menu > Settings > General > Storage is pointing to the correct location where your eM Client 7 database was stored.

Please try the following steps to get rid of any 'ghost' messages:

• Turn off Conversations (Menu > View > Conversations > Disable Conversations)
• Close eM Client
• Open RUN function from the Start menu
• Run the command "C:\Program Files (x86)\eM Client\MailClient.exe" /dbrepair
• (For MS Store version of eM Client the command is eMClientStore.exe /dbrepair )
• Wait until the database check is completed
• Turn eM Client on
• You should then be able to set any Conversations setting you prefer.

For IMAP and Exchange accounts only:

• If that doesn't help, please right-click on the folder that the messages are in, select Properties > Repair and click the Repair button.
• This will prompt the resynchronization of this folder from the server and should reset its data.
• You can also try removing your account from eM Client and then adding it again in Menu > Accounts.

Please note that all locally stored data will be lost, but if you have your data on the server, that shouldn't be of concern.

You can make a backup just to be on the safe side through Menu > Backup.

• go to Menu > Tools > Settings > General > General
• Scroll to Operations window
• uncheck the option to Show window when an error occurs

Last update on this post has been made on May 12th, 2017

The best way to ensure all your data and settings are brought over is through Backup and Restore.

Follow these steps:

In the old device:

1.        Create a backup through Menu > Backup (Menu > File > Backup in eM Client 7 and older)
2.        Deactivate your license if you are no longer going to use eM Client on this device in Menu > Help > License (not needed for one-seat licenses, but useful for making sure no licensing problems happen)
3.        Find the .ZIP backup file and move it to your new device
   (by default in ..\Documents\eM Client)

In your new device:

1.        Install eM Client (download it here)
2.        Skip initial setup
3.        Restore from your backup through Menu > File > Restore
4.        Activate your license in Menu > Help > License

If you put the backup file in the new device in the same folder structure as the default (..\Documents\eM Client) the restore will find it right away. Otherwise, you'll need to specify the path where the backup file can be found (in Menu > Settings > General > Backup).

You can also find these steps in our blog here: New device and eM Client? No problem!

Conversations are a new feature introduced in eM Client 7.0.

This feature is a view option which can show your messages and replies to them in threads that enable you to easily read through the previous conversation on the topic in the given message thread.

Conversations are always created from messages in the given Account folders. The messages are not combined across multiple accounts.  

IMPORTANT: Deleting the conversation from message list when Conversation view is enabled in all views deletes the whole conversation.

You can change your Conversations setting in Menu > View > Conversations section to these options:

1. Conversations in All Views 

2. Conversation in Message detail only

3. Conversations disabled

 

  Read more in our blog: Conversations and in the Documentation: Conversations

Although RFC 3501 (IMAP protocol) treats folder names as case sensitive (with the exception of the "INBOX" folder) the actual behavior varies with different servers. Some servers allow case-sensitive folder names, while others treat names differing only in lower/upper case letters to be equal. It may depend on the platform or file system the server is running on. Moreover, it may even depend on the folder hierarchy where some parts are case sensitive (eg. personal folders), while others are not (eg. archive stored on a different file system). RFC 3501 provides no provisions for detecting whether a server or particular folder hierarchy is case sensitive or not. This all stems from the original design of the IMAP to work on a variety of existing message stores. It doesn't accurately reflect the current situation where many IMAP implementations are deployed as cloud services or where a message store format is dictated by a particular server implementation.

Similarly, clients don't always handle case sensitivity correctly. For clients that use the local file system as folder storage, the case sensitivity of the file system could play a role. Traditional MBOX or MailDir storage systems will behave as case-sensitive on most Windows systems thus causing issues when the server contains conflicting folder names differing in a letter case.

In eM Client we try to preserve the case of folder names as entered by the user or sent by the server. However, we do not allow two folders with the same name differing by the letter case to be present at the same level in a hierarchy as we have to work with a large variety of servers and interoperate with mailboxes accessed by multiple different clients (including mobile ones). In addition, we allow offline operation where we cannot immediately get feedback from a server on what operations succeeded and which ones didn't. This involves many use cases where interoperability problems could occur if full case sensitivity was allowed. The number of servers and clients properly supporting case-sensitivity folder names was deemed so small that we found supporting it was not worthwhile.

After you download the installer from our website, run the downloaded ‘setup’ file and proceed with the installation steps.

During the installation, you can, for example, choose to make the application launch on the system startup or set it as the default mail app on your device.

eM Client can import your data directly from Microsoft Outlook, Thunderbird, other popular clients, previous eM Client database or relevant data files.

When you first run the application, an automatic import wizard will lead you through the process if it detects that you have other email client(s) installed.

Besides this, the import options can be accessed at any time in Menu > File > Import.
This option allows you to import your emails from .eml files, contacts from .vcf or .csv files, calendar and tasks from .ics files or even eM Client settings from .xml files.

Read more in our blog: Import Data from other email clients to eM Client and in the Documentation: Getting Started.

Free license, as the name implies, can be registered at no cost. This license is meant for personal use and some of its features are limited.
Personal and Business licenses are paid licenses with no feature limits. Find the list of all features on our Pricing page or the License model page. You can decide to buy the license as a subscription or for a one-time fee.

While the Free license allows you to set up the maximum of two accounts in eM Client, it is possible to add an unlimited number of accounts with the Personal or Business license.

Free license can be activated on one device at a time.

The paid licenses also enable you to use eM Client for commercial purposes. Commercial use is any activity that helps you make a profit – the Free license therefore cannot be used in company settings or on personal computers for any kind of work or business correspondence.

Business and Personal license users also gain access to the dedicated VIP support system. The support options are fully described in the Support overview.

If you’re not sure about the type of license that you need, please get in touch with our sales department at [email protected]

In the eM Client application, go to Menu > Help > License on Windows or Help > License on macOS.

Click the ‘Activate’ button and insert your activation key (including the hyphens).

If there is no Activate button and this section already seems to include some License information it means there already is a license activated on this computer.
If it's the correct license, you don't need to do anything.

If you wish to activate a different license, simply click ‘Deactivate’ first to remove the current license. The same button will then be replaced by the ‘Activate’ option so you can proceed using the steps above.

To check if your eM Client is up to date, navigate to Menu > Check for updates.

eM Client, however, checks for updates automatically. Updates are pushed in waves to avoid overloading the server so not all users receive the update notice at the same time.

You can check what your current installed version of eM Client is in Menu > Help > About.

With a Personal or Business license subscription, you can always use the newest version of the program. The same is true for Free licenses.

By purchasing a one-time fee Personal or Business license, you get the latest officially released major version of eM Client, all the smaller updates related to that version, and all older versions.
If you decide to upgrade to a newer version of eM Client, you will need to renew your license.

If you purchase one-time fee license with Lifetime Upgrades, you will gain access to all present and future versions of eM Client. You can purchase Lifetime upgrades separately at any time.

The full model is described and explained here.

After you finish installing eM Client you will be automatically asked to set up your first account. You can use the Automatic setup or open the other tabs to explore manual setup options.

To set up additional email accounts go to Menu > Accounts section and create new accounts using the '+ Add account' button.

To explore the setup options in more detail please read the Create New Account page from our online Documentation or check out specific account types in the Compatibility section on our website.

eM Client supports all standard mailing services that synchronize items through the IMAP protocol or download messages through the POP3 protocol. The application also supports synchronization through the Exchange Web Services protocol for MS Exchange and Outlook.com accounts. Outlook.com accounts can also be set up with IMAP for mail and AirSync for calendar and contacts.

To include examples: we support Gmail, Apple iCloud, Office 365, Outlook.com (MSN, Live, Hotmail), IceWarp, Microsoft Exchange, Yahoo, AOL, GMX, Kerio, ... and many more - feel free to try out the Automatic setup and see.

An email program such as eM Client can retrieve your emails using different protocols. Two of the most common protocols are IMAP and POP3. So how do they work?

POP3 protocol downloads the emails from Inbox to a specific device from the server. Once the emails are downloaded, the originals are deleted from the server. This means that if you’re using POP3, the emails are tied to a specific device and can’t be viewed on other devices without forwarding them.

IMAP, on the other hand, is not tied to a specific device. Instead, you can view your emails on any device because the emails are stored on a remote server and not on an individual device. A good example of this would be when you check your Gmail account on your phone, through your email client on your desktop or through the web interface on your laptop and you see the same messages in each case.

Most of today’s mail servers support IMAP, even though there are still exceptions. If there’s only a small storage space available on the server, synchronizing messages through IMAP would quickly lead to hitting the limit so only POP3 might be available. Fortunately, eM Client supports both IMAP and POP3. You can therefore use whichever type you prefer, depending on your server.

The backup options are accessible in Menu > Settings > General > Backup.
You can choose the folder where the backups will be saved and once you check the ‘Enable Backup’ option, you can also select how often you’d like the backup to occur and how many backups you want to keep (you can store up to five different backups at a time).

To change the time of the backup on Windows:

1.        Open up the Windows 'Task Scheduler' tool
2.        Click on the Task Scheduler Library
3.        You will see eM Client Database Backup in the middle window amongst the other tasks – double-click it to open the properties
4.        Go to the ‘Triggers’ tab
5.        Now you can edit the time and day when the backup takes place.

Mac does not have a default system scheduler, so the time needs to be changed either using a 3rd party app that has this functionality, or you can change it in the file ~/Library/LaunchAgents/com.emclient.mail.backup.plist

If you want to change the backup time to the current time, you can do that from inside eM Client:

• In eM Client > Preferences > General > Backup uncheck Enable periodic backup
• Click 'Apply'
• Enable periodic backup again
• Hold the Alt (or Option) key and click 'Save & Close' or 'Apply' - this should change the backup time to the exact time you changed the setting.
• Restart launch agent - open terminal and run these two commands: 
• launchctl unload ~/Library/LaunchAgents/com.emclient.mail.backup.plist
• launchctl load ~/Library/LaunchAgents/com.emclient.mail.backup.plist

The default time for the backup on macOS is 10:00 AM.

Right-click anywhere in the toolbar and select ‘Customize’. In the window that appears, remove and add items or change their order by using the ‘Add’, ‘Remove’ and Arrow buttons.

In versions newer than eM Client 7.1, you can also customize the Mail toolbars centrally in Menu > Settings > Appearance > Toolbars.

Read more in our blog: Customizing user interface in eM Client and in the Documentation: Toolbars 

1. If you’re getting an error message, please enclose a screenshot of the error.

2. Send us the whole content of the ‘Log’ tab.
If an error appears, you can access the log by clicking on the third tab in the same window as the Error. If no error appears, go to Menu > Operations, click the 'Copy log' button and paste the log (Ctrl+V) in a message to us.

3. Send us the full number of the version that you’re using (you can find this information in Menu > Help > About).

4. Try to remember what changes you’ve made in eM Client or in your system before the problem started and describe them to us.

Submit the report via one of our Support options or send it to [email protected] (if you're still using the Trial version) and we’ll do our best to resolve the issue as soon as possible.

Don’t worry, a lost activation key is no problem.

Simply enter the email address used for the license registration here and we will send you your activation key immediately.

If you have problems receiving the key, please make sure that you entered your address correctly and also check your Spam folder.

If you’re worried that you cannot retrieve your key because eM Client is in offline mode, please be aware that most email providers in this day have a webmail option, where you can login and get your messages through your internet browser (for example Gmail addresses can be checked in your browser at mail.google.com, Hotmail, MSN, Outlook and other Microsoft accounts can be checked at outlook.live.com, etc.).

Basic eM Client licenses are meant to be used on one computer only, so if you have one eM Client license and are using eM Client on two or more computers, you will be asked to re-activate your eM Client license each time you switch between the computers.

However, we offer significant discounts on multi-license orders so you can purchase all the licenses you may potentially need in bulk. If you have any questions regarding the purchase or would like to talk about the pricing individually, please contact our sales department at [email protected].

You can send Mass mail from eM Client with a PRO license.
Mass mail is used for messages that are sent to multiple recipients but each one will get their own copy of the message (with no addresses in CC or BCC). You can read more in this article: Undisclosed recipients and how to send mass email in eM Client

It is also the correct way to send messages to numerous recipients if you do not want them to see each others' addresses.

To use this feature, add the recipients or use a distribution list from your Contacts folder in the To: field.

Instead of pressing ‘Send’ navigate to Menu > Message > Send as Mass Mail in the new message window.

The option is also available under the Send button drop-down menu (Send > Send as mass mail).

You can also use variables in Mass Mail emails that will replace information in your email with the recipient's details based on what you have saved to the contact's details in your Contacts data.

If you have several email addresses linked to eM Client, the first one that you have added will be automatically set as default. Default account will be selected as sender when you compose messages in a neutral place, such as the Favorites or Local Folders, for example. You can change which email account you’re sending messages from just by clicking on your email address in the New Message window.

If you want to change your default account so you don’t have to perform this step every time, go to Menu > Accounts, select the preferred account from the list on the left side and then click the ‘Set as default’ button. The account marked by a star is the one set as default.

Read more in the Documentation: Accounts

The automatic setup in eM Client uses the autodiscover settings on your email server. That helps the application detect the correct account settings and lets you access your data almost immediately. The most common setup is IMAP, this however depends on the mail server you’re using with eM Client.

Read more in the Documentation: Create New Account

You can set up your account manually in eM Client in a few simple steps.

1.        Go to Menu > Accounts and click the button ‘+Add Account’.
2.        Skip the Automatic Setup option, click on Mail and select ‘Other’ from the menu that appears.
3.        Click ‘Next’ to proceed with the manual configuration of your account and then simply follow the instructions.

Read more in the Documentation: Create New Account

eM Client can also synchronize all your calendars, contacts or tasks items if your server supports the CalDAV or CardDAV protocol. An example of a service that uses both of these protocols would be Fruux. You can also synchronize your Google calendar and Google contacts.

If your provider doesn’t support the synchronization of any of these items, you can always use the local calendar, contacts and tasks. Please keep in mind that items saved locally cannot be synchronized.

Local Folders are folders that eM Client doesn’t synchronize with the server, meaning their content is stored locally in the application’s database. There are various reasons why you might want to store emails in Local Folders.

For example, you can move or copy your emails there to make space on the server or to secure them in the event of a server failure. You can also move messages there so you can access them while offline. Just don’t forget that you can also use the ‘Download messages for offline use’ function that downloads the content of selected IMAP folders or of the whole account into the application’s local database.

These folders can be enabled/disabled in Menu > Settings > General > Folders via the 'Show Local Folders' option. The Local Folders will be shown in the left-side folder list under your other account folders.

Note: In eM Client 9 and older this option was in Menu > Settings > General > General.

Favorite Folders are virtual folders that display all messages from a certain folder type (such as Inbox, Outbox, Sent, Unread, Flagged messages, Search Folders or folders based on Tags) from all of your email accounts at once. They can be found in the left pane in the Mail tab, above the folders for your individual accounts.

This feature allows you to check all emails without having to go through each separate account individually. 

You can also pin any of the other folders from your accounts into this section, so the folders you use most often are easily accessible.

These folders can be enabled/disabled in Menu > Settings > General > General via the 'Show Favorite folders' option.

Read more in our blog: Smart folders in eM Client or in our Documentation: About Favorite Folders

The default database location is in the eM Client folder under your user profile in hidden folders AppData\Roaming (the path is usually C:\Users\%username%\AppData\Roaming\eM Client).

To change it, please navigate to Menu > Settings > General > Storage where you can adjust the database folder location.

However, as the disclaimer in the settings warns: when you change the location, your original database will not be transferred. Instead, a new database will be created there on the next startup, unless you move your old database files into the new location.

Go to Menu > Rules and a window with various options will appear, from where you can create and edit the rules.

Click '+New rule' and follow the Rule Wizard, it will guide you through the process.

Read more in the Documentation: Rules

You can edit shortcuts to fit your needs by going to Menu > Settings > General > Shortcuts.
Click on any shortcut that you want to change. Then, press the combination of keys you would like to use instead and the new information will appear next to the option name.

Shortcuts for new actions cannot be created at this time.

Find out what the most useful shortcuts are or read more in the Documentation: Shortcuts

Even if you use features like rules and customizable folders to sort your mail, it can still be difficult to find a specific email. While you can manually go through your folders, there’s a much easier way to quickly find what you're looking for - all you have to do is use the search feature.

The search bar is located in the upper right corner. You can use this bar to search for keywords in the title of an email, the body or the sender’s address. Type in the keyword, hit ‘Enter’ and a list of emails with that phrase will pop up.

Advanced search

For a slightly more advanced search, you can type a “?” in the search bar and a drop-down menu will appear. This can help you narrow down your search by specifying things like the location of the keywords, if the email has an attachment, if it was sent before or after a certain date and so on.
You can also click the downward pointing triangle at the end of the search bar to get a list of advanced options to further narrow down your search.
Select ‘Advanced Search’ for even more options.

Search Bar tips & tricks

•          If you don’t remember a certain part of your keyword, you can use the wildcard “*” to represent any character(s). For example, searching for “*ance” will turn up both “finance” and “fiancé”.
•          eM Client always searches as though there was a wildcard at the end of your keyword, so even if you don’t insert a “*” at the end, it will effectively still search for “keyword*”.
•          If you search for an email address, eM Client will give you a list of suggestions for completing the address based on who's in your contact list. Please be aware that @ isn’t treated as a separator, the whole address is therefore one text string. If you’re searching for a text inside the domain name, you need to use the wildcard: e.g. searching for ‘*emclient.com’ will turn up [email protected].
•          Please be aware that to search through the body of an email, full messages need to be downloaded. For IMAP this is not a default setting. Go to Menu > Accounts and enable downloading of messages for offline use under the IMAP tab.

Read more in our blog: Search keywords

You probably already know that you can link several accounts to eM Client. But you might also decide that, for whatever reason, you don't want a specific account linked to eM Client after all. Luckily, you can remove an account from eM Client in just a few seconds.

Go to Menu > Accounts.
In the left-hand side of the dialogue box, you'll see the list of accounts you've linked to eM Client. Select the one you want to remove and click the Delete button in the toolbar at the top.

Read more in the Documentation: Accounts

To change the order of the accounts, go to Menu > Accounts. On the left side of the window that appears, you’ll see a list of the accounts that you have linked with eM Client.

If you want to change the order of these accounts, simply click on one of them. Then use the Up or Down buttons in the top toolbar to move the account in the desired direction. This changes the order of your accounts in the main Mail tab.
The location of the Local Folders and Archive cannot be changed.

IMPORTANT: Please note that changing the account order is not the same thing as setting an account as default. The default account is always the one marked by a star, not necessarily the first one on the list.

Default reminders for all calendars can be set in Menu > Settings > General > Reminders.

You can also change individual calendar’s Default reminder in the Calendar section of eM Client.

Just right-click the calendar, select ‘Properties’ and change the Default reminder under the General tab. You can also change the color and other properties here.

eM Client can automatically find duplicate items in your accounts or local data. The tool that helps you do this is called Deduplicator.

Open the Menu > Tools > Deduplicator.. section. In the window that pops up, you can choose if you want to run the Deduplicator tool on your emails, events, tasks, or contacts. Select the item type, and click next.

You can choose to search either in individual folders or in groups of folders. Make sure that you select the folders/accounts you want to be deduplicated. Otherwise, you will receive an error message and will not be able to continue. Once you have selected the folder(s), click next.

In the next step, you can choose the action to be performed with the duplicates - either delete them permanently or move them into a specific folder. If you want to sort our the data and double-check before you remove it, sorting them to a custom folder first might be a good idea. 

Then just let eM Client find and take care of the duplicates for you.

eM Client supports export to all standard file types for all your items.

You can export emails into an email message format (.eml), calendars and tasks into iCalendar files (.ics) or your contacts into VCards (.vcf).

You can also export your account settings, rules, signatures, and other settings into a .xml file and import it into another instance of eM Client.

The export feature is accessible in Menu > File > Export.

Read more in the Documentation: Export

There are two types of archiving: local archiving and server-side archiving.

For local archiving, eM Client contains an Automatic Archiving feature which allows you to download all messages older than a selected number of days from the server and keep them stored on your local drive. These emails can be found in the Archive folder in the program’s left pane, below the accounts folders and Local Folders.

You can find this option under Menu > Settings > Mail > Automatic Archiving. It is necessary to set Archiving Scope under the Account Preferences section for the archiving to be performed.

Server-side archiving is available for all IMAP and Exchange accounts. The Archive folder will show up under the account's own folders and you can use the ‘Move to Archive’ button or shortcut to move messages from these accounts' folders to their specific Archive folder with one step.

This feature was originally only supported for Google accounts where the 'Move to Archive' option only removes the Inbox label, the same way it works on webmail, keeping the message in the All Mail folder.

Read more on our blog: Archive your emails easily with eM Client 

If you get an error indicating that your database is corrupted, the fastest way of getting eM Client running again is to restore your data from a backup.

This option will be available either from the window informing you about the results of the database check or from eM Client’s interface in Menu > File > Restore.

If you can’t access eM Client to restore the data, please follow the information below on starting with a new database to open the program.

To start with a new database, turn eM Client off and rename the "eM Client" database folder (default location is in hidden folders AppData\Roaming, the whole path is C:\Users\%username%\AppData\Roaming\eM Client) to e.g. ‘eM Client old database’.

Please note that eM Client must stay turned off during this process. Check for eM Client or mailclient.exe in the Task Manager and if you see a process with either of these names, end it before you proceed.

If you do not have a backup but still have all your data saved on the server, you will have to start with a new database, re-create your accounts from scratch and wait until the data is synchronized again.

The special folders in Favorite folders collect messages from all accounts. If there are copies of the same message it can mean the message is copied into more folders or among more accounts.

Common causes for this include:

• Duplicate setup - make sure each of your accounts is set up only once in Menu > Accounts, or all messages will appear twice in Favorite folders
• Rules - do you have any rules that are meant to copy incoming messages? Check the Menu > Rules to make sure that there isn't a rule creating unwanted copies.
• Forwarding - do you perhaps have a server-side forwarding set for one of your accounts? If you don't want messages from one account to always be forwarded to another, check your server rules, for example through webmail

Note: In eM Client 6 this problem also sometimes happened with Gmail accounts, which keeps a copy of each message in All Mail folder and also created copies in Important and Starred labels.
Since eM Client creates a separate folder for each label, emails that have multiple labels attached to them will have multiple copies saved. The only workaround for that issue is to disable the showing of redundant labels like "Starred" and "Important" in IMAP. You can find this option by opening a web browser and logging in to Gmail. Click on Settings, and then go to the tab at the top called "Labels".

Since eM Client 7.0 we have adapted Gmail's internal structure. All messages have just one copy in the All Mail folder and other folders are just assigned labels.

It’s important to realize how eM Client works with IMAP: it only downloads message headers by default to make synchronization more efficient and to save space on your device.
Messages themselves are fully downloaded once you click on them to show their content in eM Client. Thus, eM Client cannot search in the bodies of all your messages by default.

If you’d like to search inside the messages, you can download your messages for offline use.
This setting is available in Menu > Accounts - the account that you’d like to download the emails for - IMAP tab - Offline - "Download messages for offline use".
You can also include images and attachments (if you want to search inside text attachments).

POP and EWS accounts download full messages automatically.

This is a known issue with selected Yahoo servers because Yahoo does not officially support subfolders at all.

That is why the subfolders created in eM Client can disappear after synchronizing with the Yahoo server. The server will clear them out.

We suggest only using top-level folders in Yahoo to make sure no messages get lost.

We have enhanced the IMAP certificate checks so this is an expected result when your certificate name does not match the hostname. Please either use the correct certificate or match the server address found in your account settings (Menu > Accounts > the relevant account - IMAP tab - Host) with the one in the current certificate details.

If you are redirected on the server and the names can’t match, you can also choose the possibility to connect with the current settings and remember this choice.

When setting up a POP3 account using the automatic or manual account setup, you can choose between creating a separate folder tree in the left pane for your POP3 account, or you can have your items synchronized with the default local folders tree.

Both options will store your emails locally as POP3 accounts do not keep your items synchronized with the server and are only used to download new data. Having the account in the left pane will allow you to move the account in the list of your accounts, having it listed under local folders will, on the other hand, reduce the number of listed accounts.

This choice cannot be changed after the setup, you will need to set up the account anew. Be careful not to accidentally remove your messages when doing so, you can always create both setups at once, copy your messages and then remove the unwanted setup.

Microsoft has unfortunately decided to stop supporting Skype for 3rd party applications so this feature had to be removed from eM Client. eM Client does not provide VoIP functionality, but clicking on the phone number in the Contact section of the Sidebar (on the right side of the main eM Client window) results in the standard call-to action, which should detect your default VoIP app and dial the number.

Unfortunately, Facebook has decided to quit Facebook Chat support for third-party applications as of April 30th, 2015. Therefore, this functionality has been removed from eM Client as well.

To set up an alias to your account navigate to the account settings under Menu > Accounts, select your account, click on "Aliases" under the General setup of your account and add your email address to the list of Aliases.

Note: In order to send out on behalf of such account, eM Client may require an initial setup of the account with your mail server, for example connecting the two accounts in your online Account settings. In case of Google accounts you first need to go to gmail.com and link the two accounts in Settings there.

For IMAP accounts eM Client by default only downloads the headers of incoming messages and the body content is downloaded once you open the message's details.

While the startup synchronization is being processed by your server, it's possible the request for downloading body content may have timed out and can be run again once the folder sync is finished.

To avoid this, try to enable the "Download messages for offline use" on your account or one of your folders – for example, your Inbox.

To do so, navigate to your account settings, IMAP, and check the option to download messages for offline use, or right-click your folder, navigate to its properties and enable the option for selected folders only.

This warning is a general connection error, and it can be caused by minor connectivity issues between the application and your mail server. It can occur when the server is not responding or if the number of requests is higher than usual and the server is unable to respond while the request is valid.

Don't worry though – eM Client should be able to automatically reconnect if the connection error is thrown unless there's a real problem on the server.

You can find more details on what causes this connection issue in the third tab called Log in Menu > Operations. If you need help analyzing the problem, get in touch with our support.

This window is a normal step of Gmail accounts set up, as can be seen in our step-by-step Gmail/G Suite setup on our website.

It's part of Google's authentication called oAuth, where instead of giving the external application (eM Client) your password, you just give access from your Google account settings.

So, log in with your Gmail account and allow access for eM Client by clicking on "Accept" on the second browser page right after you log in to the browser.

eM Client will be granted an authentication token that you can revoke at any time using your online Google accounts settings.

Read more in our blog: OAuth authentication with Gmail

If you try to upload or change an event, task or contact but an error message pops up with the reason described in the message (e.g. invalid value, missing or empty field) it means that there is an invalid item that you're trying to synchronize with the server.

Try to delete the local changes to stop the synchronization – if this cannot be done manually or the error message cannot be closed (or keeps reappearing) it might be best to clear the local cache memory in eM Client for this account and download the correct data from the server.

Simply right-click the affected folder (calendar, contacts folder, etc.), select Properties and open the Repair tab. Click the ‘Repair’ button and wait for the resync to finish.

eM Client for Windows and macOS is currently localized in the following languages:

•          English
•          Catalan
•          Chinese (Simplified)
•          Croatian
•          Czech
•          Danish
•          Dutch
•          French
•          German
•          Greek
•          Hungarian
•          Italian
•          Japanese
•          Korean
•          Latvian
•          Norwegian
•          Polish
•          Portuguese
•          Portuguese (Brazil)
•          Russian
•          Slovak
•          Spanish
•          Swedish
•          Turkish
•          Ukrainian

eM Client for iOS and Android is currently available in:

•          English
•          Czech
•          Danish
•          Italian
•          German
•          Spanish
•          French
•          Hungarian
•          Japanese
•          Latvian
•          Norwegian
•          Dutch
•          Portuguese
•          Portuguese (Brazil)
•          Russian
•          Slovak
•          Turkish
•          Ukrainian
•          Chinese (Simplified)

Note that some of the translations were created with the help of our users and may contain some translation errors or be unfinished.

If you come across an error like that, please make sure to report it to us as we'll be more than happy to improve the localizations.

If you'd like to volunteer to create a localization for a language we're missing, please contact us at [email protected].

We believe that Spam should be filtered directly on the server so eM Client includes only one default Spam rule that moves messages marked by SpamAssassin as spam to the Junk folder.

Besides this option, you can always blacklist an email address/domain by clicking the button "Move to Junk" and choosing the option "Move to Junk and blacklist email/domain". This Blacklist is then saved as a Rule in the Rules section.

You can view and manage the Blacklist rule in Menu > Rules. Just select the Blacklist and click the 'Edit' button.

A new window with all the domains and addresses in your blacklist will pop up and you can add new items or remove any of the email addresses and domains already in it.

If your server does not provide any spam filtering options, we can also recommend using an external Spam filtering program, like MailWasher, Spamihilator or others.

Search folders are virtual folders that perform a search on selected criteria once you open the folder, allowing you to collect your items from specific folders or multiple selected folders just by using the right keyword or criteria.

The Search folders can be seen in the Favorites section. If you don't see Favorite folders on the top of your Folder list you can enable them in Menu > Settings > General > General (Show Favorite folders).

Once you have Favorites shown, you can right-click any of the folders and select Display > Search folders. Right-click the search folders option and create a new search folder.

You can also create a Search folder using the Search function in the top right - open the drop-down menu and select the 'Create Search Folder' option.

Read more in our blog: Custom search folders

Update: New licensing manager has been released for PRO license users and is available at http://licensemanager.emclient.com/

SilverLight is no longer needed for access to our License manager.

Chrome recently pulled their support of Silverlight and as a result, the only browser that you can use to access licensing.emclient.com is Internet Explorer. 

If you are using Windows 10, you can still access Internet Explorer - simply type Internet Explorer into search and launch it

Yes, you can use a number of variables in your messages while sending mass mail from eM Client.

To add variables, right-click the message body while composing a new message and select Insert > Variable. Then you can select a number of variables from a list of available variables.

The content of the variable will be replaced by either data from your computer (such as date and time options) or from your contact's details.

Note: If you use Variables in your message and try to send it to more recipients it will always be sent as Mass Mail (PRO feature).

If you previously activated a Free license, your key will not be automatically replaced if you purchase a Pro license.

You need to deactivate the Free license and activate the Pro license instead.

1.    Go to Menu > Help > License
2.    Click the ‘Deactivate’ button (the button will change and the program will be turned to offline mode momentarily)
3.    Click the ‘Activate’ button
4.    Insert your new license key and confirm

All official themes are already included inside eM Client. You can view those in Menu > Settings > Appearance > Themes.

In eM Client 8, we introduced a new Theme editor with a direct WYSIWYG mode.

You can find all steps and tips in this article.
For example, if you want to enable wider scrollbars, you can now easily find the setting under Elementary controls > Scrollbars, and check the UseSystemScrollbar option.

Don't have the time to design your own theme right now but the official themes don't fit your style?

You can also choose from our user-created Theme gallery.

After creating or downloading your new theme, you still need to Import it in Menu > Settings> Appearance > Themes and then select it from the Theme list to apply it.

LEGACY OPTIONS

Steps to follow for eM Client 7 and older:

1.        Select the theme you want to base your own theme on.
2.        Click the ‘Advanced’ button and select "Save current theme as..." – the theme file will be the saved as a .emtheme file.
3.        Open the .emtheme file in any text editor
4.        Adjust or recreate your theme using the available tags, each item is explained in the comment inside the file
5.        Save your theme file
6.        Go back to Themes settings
7.        Click the Import button and import your new theme
8.        Select it and Apply it
9.        You have successfully changed your eM Client theme! 

Example for direct XML edit:

If you just want to make a small change, for example, enable wider scrollbars, find the relevant line and change the True/False value.

<UseSystemScrollbar description=""Use system scrollbars with no automatic hiding"">False</UseSystemScrollbar>

Colors are saved in HEX codes, there are many sites that provide color pickers and provide you with the code - for example Color-Hex.

Note: User-made themes can also be found on our Forum, just search for 'Theme'.

This issue started happening in eM Client 7.0 when we changed the way we work with Gmail. Since we started supporting Gmail labels and folder structure, all labels are synchronized.
And one thing that was not visible before (and might not be visible in other clients) is that Gmail assigns the 'Important' label to all messages synchronized through IMAP.

In eM Client 8.1 we added a workaround in the Menu > Accounts section under the IMAP tab.

Under the Tag section you will find the Show Important tags option and you can select to either show it based on Gmail's settings, Always show it or to Never show it. 

LEGACY OPTIONS

In older versions, you need to go to your Gmail settings in your web browser and create a filter that will remove the Important label automatically from each message.

To achieve this, go to Gmail webmail, open Settings > Filters and Blocked addresses. Create a new filter where all messages received by your email address will never be marked as Important.

Screenshots of such filter setting can be found below:

Note: You can either apply the filter directly to all previous conversations or open the Important folder/label and manually select all messages to remove the Important label

Update 6/10/2022: Since Google discontinued their Less secure apps setting, you might not be able to use the account as POP anymore. Please read more in this article: Google ‘less secure apps’ access and what it means for eM Client

While Gmail's default (and preferred) email protocol is IMAP, we definitely support a POP protocol option as well. However, since it's not the available setting from Autodiscover, you will need to set up the account manually.

Gmail has a special secure login called oAuth, which natively supports only IMAP. However, a secure POP setup can still be created thanks to App-specific passwords.

You will just need to Allow access for Less secure apps (as POP connection is seen as less secure than IMAP with oAuth login), enable POP protocol in your Gmail settings and then enable 2-factor authentication to create an App password (a special password which will be used only for eM Client - so your actual Google password is safe).

Manual setup in eM Client is then available in the New Account window under Mail > Other.
There you can select the POP protocol, input your server settings and create your desired POP setup. Make sure to use the created App password instead of your main Google password.

You can view and manage the Blacklist rule in Menu > Rules. Just select the Blacklist and click the 'Edit' button.

A new window with all the domains and addresses in your blacklist will pop up and you can add new items or remove any of the email addresses and domains already in it.

With 'Send Later' (paid feature) you can set a specific time when you want your message to be sent.

You can either use the drop-down menu under the Send button or via Menu > Message > Send later.

 Until the message is sent it is kept in your local Outbox folder.

The Outbox folder can be accessed through Local or Favorite Folders. If neither of these is available, you can enable them in Menu > Settings > General > Folders.

If you want to change or stop the 'delayed' message from being sent, you can edit or remove it from the Outbox.

Note: You can also set a 'default' Send later time for all your messages in Menu > Settings > Mail > Send. 

In eM Client 9 and older the Local and Favorite folders can be enabled in Menu > Settings > General > General.

Microsoft has officially ended support for Windows XP on April 8, 2014.
Unfortunately, this means that the security protocols from the last service update are no longer up to the current standard.

So when you try to activate the license after the eM Client trial, you will encounter an error message instead, because the request sent from Windows XP, unfortunately, doesn't arrive at our licensing system.

A problem has occurred when contacting the licensing server:

The underlying connection was closed:  an unexpected error occurred on a send.

We have created a compatibility version for XP which allows the connection, but please be aware that this version will not be updated in the future.
Please send us a message to [email protected] if you are interested in this version.

If you want to set up just a separate calendar account or your available calendar account could not be found using the Automatic setup, you can definitely set it up manually.

•          First, go to Menu > Accounts, and click on the + Add account button.
•          Skip the Automatic setup and click the Calendar section instead.
•          Select the option that applies to your existing Calendar account and click Next to finish the setup.

Note: If you don't have an online calendar account but would want to have one to synchronize your calendar online to your other devices, you can register an account for free on platforms that provide an option to synchronize just your Calendars and Contacts (such as Fruux, for example).

Read more in the Documentation: About Calendar

If you want to set up just a separate account for Contacts or your available 'Contacts' account could not be found using the Automatic setup, you can definitely set it up manually.

•          First, go to Menu > Accounts, and click on the + Add account button.
•          Skip the Automatic setup and click the Contacts section instead.
•          Select the option that applies to your existing Calendar account and click Next to finish the setup.

Note: If you don't have an online contacts account but would want to have one to synchronize your contacts online to your other devices, you can register an account for free on platforms that provide an option to synchronize just your Calendars and Contacts (such as Fruux, for example).

If the program somehow switched to a language you do not understand, do not worry!
The buttons are located in the same place for all localizations, so follow these screenshots to find your way to the language settings:

1. Open Menu > Settings in the main window. Menu is in the top left corner of the program, Settings is a 7th item on the list in the drop-down menu.

2. This will open the Settings window. Here you want to open the General > Language section. General is the very top section while Language should be the second one in the list below. 

3. Then just select your preferred language and press Ok.     

To change any data concerning your registered/purchased eM Client license, please contact us at [email protected] and we'll arrange the desired changes.

After 30 days of using eM Client, you might encounter this message:

Demo expired

Your demo period has expired. Please obtain a valid eM Client license from http://www.emclient.com/purchase

You may access your offline data, but online synchronization and the sending of emails are disabled. Once a license is obtained, you will be able to use the product without limitations again.

This means you haven't activated a license within the period of the trial version.

If you already registered or bought a license, just take your Activation key and activate it in Menu > Help > License.

Otherwise please go register or purchase a license from our website. Please make sure to register the license to an email address that you have access to, as the license key will be sent there.

Yes, you can easily navigate between the left-side menu items (Mail, Calendar, Tasks, Contacts, Attachments, Notes, Widgets) using the CTRL and 1 - 7 keys.

You can change these shortcuts in Menu > Settings > General > Shortcuts.

You can easily subscribe to an internet calendar of your choice via Menu > Tools > Subscribe to Internet Calendar. Simply copy the URL address of the calendar into the address field and you are ready to browse the calendar in the Internet Calendars section of your Calendar.

Please be aware that you can only use valid iCalendar links.

Read more in our blog: iCal Subscriptions

NOTE - with the oAuth in v8 the calendar and contacts are set up automatically
Using the automatic setup in Menu > Accounts will set up your AOL account only for email using IMAP for incoming and SMTP for outgoing mail (which is the default setting taken from the mail server). 

However, you can set up separate Calendar and Contact accounts in eM Client, so using the "+" button for New Account in Accounts section select the Calendar>CalDAV and then Contacts>CardDAV manual options instead of the Automatic setup.

Server settings for these accounts are:

CalDAV Base URL:    https://caldav.aol.com
CardDAV Base URL:  https://carddav.aol.com

and just use your AOL login to set these up.

Yes, if you need to quickly zoom in or out of a message detail, simply click on the message (to make sure the focus is in there) and either

a. Press Ctrl and use the mouse scroll button to zoom in/out or

b. Press Ctrl and use either the '+' button to zoom in or '-' to zoom out.

Ctrl + 0 button will reset the zoom to the original size.

The Operations log can be very useful for troubleshooting, as it contains information about the Operations that were done during this run of the application. If there is an error message the Operations log might contain more detailed information about the error itself.

If an error message already popped up, the Log can be found in the third tab of the same Window. Otherwise, you can open this window manually in Menu > Operations. The Log is in the third tab of this window.

Simply click the Copy log button and then paste the text into a text editor (Notepad, MS Word, ...) via the Ctrl+V shortcut.

You can then search for your error message there in case the error details made the reason self-explanatory or you can send this log to the support so we can analyze it and provide advice.

Support options are described on our website in Support overview section. 

LEGACY OPTION

In older versions the Copy log button is not available, so you will need to copy the log manually.

• Open the Log tab and then click inside, to select a single line
• Press Ctrl+A keyboard shortcut to select all the lines
• Use Ctrl+C to copy the content
• Open a text editor (Notepad, MS Word, ...) and use Ctrl+V to paste the log there and then send it to support.

Yes, you can definitely use a number of startup parameters.

Here is a short overview:

    /dblocation PATH

    This parameter will determine which folder will eM Client load the main database from. If the given folder does not exist, eM Client will create the folder and a new, empty database in it. Without this parameter, eM Client will load the database from the currently set default location.

    /localmutex

   Use this parameter when deploying the application in a Remote Desktop Services or Terminal Services environment where accessing global mutexes (short for „mutual exceptions“ in programming) is forbidden – the application will use local ones instead.

    /mailurl RECIPIENT

    Use this parameter to create a new message with a pre-defined email address compliant with RFC 6068.
Example: MailClient.exe /mailurl "mailto:[email protected]?subject=hello&body=bodytext"

    /open PATH

    With this parameter you can open any .eml, .msg, .vcf, or .ics file in eM Client.

    /newmail

    This parameter will open a window to compose a new mail.

    /newcontact

    This parameter will open a window to create a new contact.

    /newevent

    This parameter will open a window to plan an event.

    /newtask

    This parameter will open a window to create a new task.

    /importsettings PATH [-s] [-p PASS]

    This parameter defines a file which contains eM Client settings and its password, which needs to be used to import the data. It needs to be an .XML file and can contain application settings, account configuration, templates, quicktexts, and rules. PATH is the location of the file. The rest of the parameter options are optional. [-s] stands for "silent" and means that the settings will be imported without opening the UI. [-p PASS] is for inserting the password, if there is one protecting the file.
Example: MailClient.exe /importsettings "c:\Temp\settings.xml" -s -p MyPassword

    /activate

    You can easily activate your eM Client using this parameter and activation key.

    This parameter can also be used without the Activation key, but for activation to be possible in this case eM Client needs to have a LastActivationKey entry in its database with a valid Activation key. Usually, the LastActivationKey value is set using the /importsettings parameter.

    /deactivate

    This parameter will deactivate the license in your device. This can be useful when you have a set number of seats on your license and want to quickly free up the space by deactivating the device you no longer plan to use.

Note: This answer applies only to Windows version.

Read more in the Documentation: Startup Parameters

After you set up your Gmail account you might encounter this error message:

'All Mail' folder disabled

For Gmail and Google Apps accounts, eM Client synchronizes the 'All Mail' folder. It appears that IMAP access for this folder on account '<your email address>' is currently disabled and synchronization will fail.

To fix this, you need to make sure the 'All Mail' folder has 'Show in IMAP' checked in their Gmail settings at https://mail.google.com/mail/u/0/#settings/labels.

Simply follow the directions from the error message and enable All Mail label to be shown in IMAP.

NOTE: The 'All Mail' folder is a vital part of your Gmail account - it stores all the messages in your account (with the exception of Trash and Spam folders - these are separate).
Synchronizing this folder will not create any duplicates of your messages, because eM Client supports this specific Gmail structure and each message is stored only once in the All Mail folder and all the other folders (Inbox, Sent, Drafts, ...) are just Labels - special search folders which will show the messages from All Mail folder with the matching Label. Kind of like Tags in eM Client.

This actually allows for the synchronization to be faster and the data to take up less space on your device than if the Labels were converted into real folders.

When your email account is going to be canceled soon or your space on the server is getting filled up, you might want to create a local backup of your messages or download them from your server.
This applies mainly to IMAP and EWS accounts.

Here are steps to follow to copy your messages and/or folders to Local folders:

Make sure to have the option to ‘Show local folders’ enabled in Menu > Settings > General > Folders.

Note: In eM Client 9 and older this option is in Menu > Settings > General > General.

To copy folders:

1.        Right-click the folder you want to copy
2.        Select the ‘Copy folder...’ option
3.        In a new window select the ‘Local folders’ as the destination where you want to make a copy
4.        Confirm
5.        Wait for eM Client to copy the folder with messages
6.        Continue with other folders from the top

You can select the 'Local folders' directly if you want the folder to be at the same level as the ‘Local Inbox’, ‘Sent’, etc. If you select any of the folders directly, the folder you are copying will be a subfolder of that folder.

To copy just messages:

1.        Open the folder with messages
2.        Click one of the messages to bring focus to it
3.        Press Ctrl+A to select ALL the messages in this folder (or select the ones you want specifically using the Shift or Ctrl button)
4.        Right-click one of the messages (with all messages still selected)
5.        Use the ‘Copy to Folder…’ option in the drop-down menu
6.        Select the exact folder where you want to copy these messages to
7.        If you are copying from Inbox, select the Local Inbox, etc.
8.        Confirm
9.        Wait for eM Client to finish copying these messages
10.        Continue with other folders from the top

If you have a large number of messages that have not been previously downloaded for offline use, the copying can take some time. In that case, eM Client is downloading the messages fully for the first time so it takes longer than copying a message that is already downloaded in eM Client.

After the messages are safely copied, you can remove the originals from your account folders, in case you need to free up space on your email server.
The copies in eM Client's Local folders are safe from any external force.

Note: We do suggest enabling automatic database backups if you keep local copies of important messages, in case the files in your computer got corrupted or if your computer crashed.
You can backup manually using the Menu > Backup option or enable Automatic backup in Menu > Settings > General > Backup.

eM Client does not enforce any size limits on your database or on your accounts.

The database size is technically limited by the free space on your disk, where the database is saved (default is set to C).

Your email account size can be limited by the space on your email server if you use an email protocol which synchronizes your data with it (IMAP or EWS).

No, email synchronization cannot be limited just to a selected time period (for example from only the past few months or years) at this time.

For IMAP accounts, we by default only synchronize the email headers instead - this way you have an overview of all your messages but the synchronization is more efficient and the downloaded data doesn’t take up too much space.

A full message is downloaded into the eM Client database only after you open it.

For EWS accounts we automatically leave out the attachments and images - those are then downloaded only once requested. Unfortunately, the bodies of the messages are downloaded automatically, by the nature of the Exchange protocol.

The default style of conversations we implemented is inspired by Gmail, so the order is currently only from the Oldest at the top to the Newest at the bottom. The messages marked as read will be collapsed by default so you will always be able to read the newest messages comfortably, but if you want to read the whole thread you can do so in a natural order.

In eM Client 10, the option to reverse the order of conversations was added. You can find this option via menu > View > Conversations, or in menu > Settings > Mail > Conversations.

If you use the default Windows proxy, download the config included in the attachments section of this article.

Copy it into the eM Client folder in C:\Program Files (x86).

This config file should then enable the program to detect the needed credentials for your proxy.

However, this solution only works for eM Client up to version 7.2, not for the newly released eM Client 8.

If you are using a different proxy solution or newer version, you need to either arrange for eM Client to get the credentials using a 3rd party program (e.g.Proxifier) or add eM Client to exceptions.

Unfortunately, Gmail does not forward the information about the label color through IMAP protocol, so eM Client cannot load the exact same colors and assigns random ones instead.

However, if you go to Menu > Tags and create a new tag with the same name as your Label, you will be able to select your own color in eM Client.

This workaround will work for all top-level Folders/Labels, not subfolders.

Automatic replies (also called "Out of office") can be enabled in Menu > Tools >Automatic Replies.

In the new window that pops up, you can select the email account to apply the Automatic reply to, set the First and Last day when the reply is to be sent and then input the Subject and Body of the reply itself.

The Automatic reply feature is currently available for Gmail accounts, Icewarp accounts and accounts using Exchange protocol.

Read more in our blog: Automatic Replies in eM Client for tutorial and Out of office messages with eM Client for examples.

This is, unfortunately, a common confusion, as there are actually two different settings for changing your font style in eM Client. One is your preferred style for reading messages and the other for writing/composing a message.

1. Menu > Settings > Mail > Read

The Preferred Style setting in this section will be applied to the messages you read, if they use Plain text. Plain text format does not have any set "visual" formatting, so you can apply your own.
This way you can make the font easier to read for you.

The setting will not be applied to HTML messages, which do have set formatting.

2. Menu > Settings > Mail > Compose

The Preferred Style in this section will be used for writing all your messages.

If any of the main left-side sections is missing, whether it's Mail, Calendar, Tasks or Contacts your data is definitely not gone. It just means you accidentally hid the section.

You can make it appear again easily.
Just right-click any of the other items in the same menu (for example Calendar) and a drop-down menu with all options will appear. The missing section will not have a checkmark next to its name.
Click it to check it and make it appear again.

eM Client supports two specific kinds of Archiving features:

• Local automatic archiving inside the eM Client program and
• Server-side archiving.

Automatic Archiving

eM Client archiving can be found in Menu > Settings > Mail > Automatic Archiving.

The way eM Client archiving works is that the program will create a special set of local folders called 'Archive'. Archive folders will be shown below all your other account folders and Archived messages will be only available in your device. If you will choose to archive messages from a synchronized account (set up with IMAP or EWS protocols) the messages will be removed from the server as well, so you will no longer be able to access them using webmail.

To make the automatic archiving actually work you need to enable it, set how often the Archiving should happen (Archive every X days), set how old the messages should be (Archive messages older than X days) and most importantly, select which accounts/folders you want to perform the Archiving on (Account Preferences).

Click the ‘Archiving Scope’ field for each Account to select which folders should be included.

You can also perform the archiving manually by clicking the 'Perform Archiving' button. This function can be used even without enabling the Automatic archiving in the top checkmark (Enable Automatic Archiving).

Server-side Archiving

For IMAP and EWS accounts the Archive feature will move messages into a single folder called 'Archive', which will be among the other special folders like Inbox, Sent, Drafts, etc.
You can select a message (messages) and use the Archive option via right-click, toolbar button or the default shortcut Ctrl+Shift+A.

The shortcut can be changed in Menu > Settings > General > Shortcuts.

An exception to this is the Gmail Archive. This is a specific function which removes the 'Inbox' label from a message in Inbox, leaving the message accessible in the 'All Mail' folder. You can read about Gmail's native archiving and what it means on Google support. 

Read more in the Documentation: Automatic Archiving

Unfortunately, we do not provide a direct import option from Eudora.

The best way to get your data from Eudora to eM Client safely is to first use Thunderbird to import the data into it (detailed instructions can be found in this MozillaZine article).

After all your data is safely imported in Thunderbird, go to eM Client and then use the Menu > File > Import.. > Application: Thunderbird option.

The default Export option for Contacts is VCF file, which is a standard file type for electronic contacts, but you can export your contacts into a CSV file as well. 

1. Go to the Contacts section and use the List - Custom view.
2. In this view, all information columns are available - you can either keep them all or use the Columns configuration to select which columns you want to keep in your final CSV file.
3. Then open the folder/s or make a search for the contacts you want to export. The data you see is the same the final CSV file will contain.
   Use Ctrl+A or Menu > Edit > Select All to select all the contacts.
4. Right-click the selection and use the Export List > Export to CSV.
5. Select the location for your file and finish the export - and you're done, your custom CSV contacts file is finished.

eM Client is able to show avatars for your contacts and can also download avatars from external sources like domain icons and gravatar. But how do you change your own avatar?

This cannot be done directly via eM Client yet, but there are ways to get your avatar updated and connect an image with your email account everywhere.

The easiest way to change your email avatar is via Gravatar - https://gravatar.com/
Just create an account with your email address and upload an image.
eM Client will be able to load this image for your email account.

If you own your domain/have a website on the domain you can set up a favicon.
You can read about favicon setup here - https://www.w3.org/2005/10/howto-favicon

Another tool that you might find useful is a favicon generator, to create different sizes of your image - https://www.websiteplanet.com/webtools/favicon-generator

IMPORTANT: Please note that since eM Client updates the downloaded avatars every 30 days, the avatar changes won’t be immediately visible.

However, you can force eM Client to re-download new images by disabling and re-enabling the download of images from external sources, which will clear the image cache:

1.        Go to Menu > Settings > Contacts > General
2.        Disable the option ‘Download avatars from external sources’ and click ‘Apply’
3.        Then enable the option ‘Download avatars from external sources’ again and click ‘Ok’
4.        Your new image will show up now

Users of BTinternet email accounts have recently seen a variation of these errors:

[IMAP] Cannot open folder ... ([Clientbug] Select additional arguments found after last expected argument)

[IMAP] Cannot open folder ... (unrecognized extra arguments to SELECT command)

We have analyzed the issue in detail, including IMAP logs provided by some of our users and our developers concluded that it's a server issue that can't be fixed on our side, unfortunately.

It seems that the BT updated the feature on their back-end servers but didn't adapt the proxy servers which report the errors. It seems that BT is continuously changing the settings and that's why sometimes the account reset helps but later on the issue reappears.

Some tweaks to the settings seem to help though, these are solutions provided by our users:

"A bit of research reveals that BT uses two versions of mail - BT email and BT Yahoo email. See here

http://bt.custhelp.com/app/answers/detail/a_id/57483/~/im-not-sure-if-ive-got-bt-mail-or-bt-yahoo!-mail

By logging into the desktop version of BT email you can see which version you have got. It transpires I have BT Yahoo mail. I have set the email up using BT Yahoo settings and it is now working again. Something must have changed on BT's side. So if you get this query again this should be the solution."

Another tip that seems to help is filling in the manual option for credentials under the IMAP tab in Menu > Accounts. Open this section and open the IMAP tab for your BT account. Insert your credentials into "these credentials" fields and save the settings.

Also, if your username is set anywhere as just the user part, make sure to change it to full address - ie. if the full email address is [email protected] make sure the user name is set to "[email protected]", not just "example".

Update: NTLM is now supported in eM Client 8.2 and newer

In case you're trying to set up an Exchange account in eM Client for Mac and you're getting pop-ups with failed authentication, then your mail server most likely requires an NTLM authentication, which is currently not supported in eM Client for Mac.

We are aware of the problem and are collaborating with Microsoft on a solution that will solve this once and for all.

A possible workaround is setting the account up with IMAP protocol manually via eM Client > Add account > Mail > Other or ask your mail server administrator if there are some other authentication methods available for Exchange protocol on your server.

Starting with eM Client 8, you can open eM Client in more than one instance. So, if you want to have Mail open in one window and Calendar in the other, you can!

Just right-click any of the left pane items and select the option "Open in New window..".

eM Client 8 can use server-side search for all Exchange accounts and also IMAP accounts whose servers support this feature. This way you can get more complex results quicker without having to download your messages for offline use.

For IMAP accounts your mail server needs to support these two extensions:

• RFC 7377: IMAP4 Multimailbox SEARCH Extension (https://tools.ietf.org/html/rfc7377)
• RFC 6203: IMAP4 Extension for Fuzzy Search (https://tools.ietf.org/html/rfc6203)

You do not need to enable any setting for server-side search to work, so if it does not seem to behave as expected, check with your server provider or your admin if these extensions are available for your account.

All Attachments View is a new section in the left pane. In this section you can load all attachments from your accounts and messages and easily search for the ones you need.

This feature is available only to the Pro license users.

Read more in the Documentation: Attachments 

Starting with eM Client 8 attachments can be uploaded to Dropbox, OneDrive and Google Drive and attached to your message as a link. OwnCloud and Nextcloud support was added in eM Client 8.2.

To use this feature, you need to have either of these apps installed on your device and login to both the app and login again via eM Client when you first attempt to use it. You can also set up the storage providers in Menu > Settings > Mail > Attachments.

When you attach a file from the Cloud storage folders you will get to decide if you want to insert the file or just the link.  

Tap and swipe are two common gestures that allow the user to perform primary actions on their mobile devices. It's like a keyboard shortcut, but instead, you drag the message to the side.
And you can use the same gestures in eM Client on your touch device. This feature does not work on touchpads, it's only for touch screens right now.

You can use left and right swipe gestures in the Message list and in Notes.
The actions for both right and left swipe can be set in Menu > Settings > General > Swipe (Windows) | eM Client > Preferences > General >Swipe (macOS).

On Mac you need to enable 'Swipe between pages' in your System Preferences > Trackpad settings to make it work in eM Client in 

Favorite folders are a set of folders available at the top of your mail folder list.

The Favorites include global pre-defined folders, formerly known as Smart folders, that unify your accounts' inboxes, sent folders, drafts, etc. They also contain special folders for all unread messages, all messages with a flag, Snoozed emails and important messages that have Watch for reply enabled.

You can also add your existing folders from any of your accounts to the Favorites, simply drag&drop the folder into this section or via right-click > Add to favorites.

This way you can have folders that you use often right at hand.

If you pin folders with the same name into the Favorite folders (for example specific Inboxes) you can rename them. The name change in the Favorite section will not affect the original folder name.

Yes, eM Client supports Notes feature. This feature is available only to the Pro license users.

The Notes are a new left pane section that you can use. In addition to Local Notes (saved in Local folders), you can also synchronize Notes for Exchange, Office365, IceWarp and other CalDAV accounts, if they have a Notes folder on the server.

You can create, edit and delete notes, manage them with folders and tags but also forward them as a message. When you forward a note the Title is used as Subject while the body of the note will be used as the message body.

Please mind that these Note services cannot currently be implemented:

• Google Keep does not allow access from external apps
• Evernote plans to shut down the API access for external apps soon
• iCloud notes - no public API available for access from external apps

You can assign an image to each of your accounts during the account setup or change the image at any time in Menu > Accounts. These avatars will help you determine which account your messages belong to in mixed views and search results.

These avatars are currently only stored locally they are not the same as contact avatars downloaded from the domain or Gravatar.

To change the avatar your contacts might see when they receive your messages read this FAQ article: How do I change my own email account avatar?

Tags are labels you can use to attach a detail or category to a specific item.
You can then use this tag to search for these items, look through special tag folders or just use the colors to make your data more organized.

You can manage tags in Menu > Tags section.
You can manage tags for all items in eM Client - Mails, Events, Tasks, Contacts and Notes.

When you create a tag you can give it a name, assign a color and even a keyboard shortcut.

You can then specify if the tag can be used for messages, events, tasks, contacts or notes or any combination of these.

If your items are synchronized with a server that supports the tags feature, they will be synchronized across your devices. Otherwise, the tags will be kept locally.

Gmail labels are treated as Tags in eM Client.

Note: Tags have been called Categories in eM Client 7 and all older versions of eM Client.

Read more in the Documentation: About Tags

AttachmentName and AttachmentContent keywords have been added to the search in the Mail section of the program, so you can now look for words directly contained in the attachments.

You can use full text search in eM Client for documents such as Word, Excel, PDF etc.

In the new All Attachments view (PRO) you can easily sift through the files directly - you can sort through files based on type, account or the item type it was originally attached to.

The Watch for Reply feature is a new button available in the toolbar of the New message window.
If you expect a reply to an important email you can set up a special reminder in eM Client.

You can either get a reminder for when such a reply is received to draw your attention to it or you can get reminded after a specific time frame that your message was not replied to, so you can reach out to the recipient again.

After you enable watching for reply a copy of the message will be saved in a special Favorites folder called Unreplied, so you can check which replies you're waiting for at any time.

You can also disable the reminder from this folder, should the recipient reach out to you via other means and the reminder is no longer needed.

Read more in our blog: Never miss important emails with eM Client's Watch for Reply feature and in the Documentation: Watch For Reply

Attention: These solutions can only work with eM Client 8.0 - 8.1, they will not work for legacy versions of eM Client. eM Client 8.2 and newer do not need this solution, as it is included natively.

eM Client supports MFA/oAuth login, but the pop-up window for this authentication method will not be allowed to be used by default on your device.
That is why the login method will not work natively for now, but we have prepared workarounds to help you out:

eM Client for Windows

• Download the attached registry file in this article.
• Run it while eM Client is still closed and confirm the changes it will make.
• Run eM Client and use the automatic setup to set up your accounts with oAuth.

If you'd like to add the needed registry key manually instead of using our provided file:

• Run Regedit
• Go to Computer\HKEY_CURRENT_USER\Software\eM Client
• Add the DWORD item AllowExchangeOnlineOAuth and set its value to 1
• Then run eM Client and use the automatic setup to set up your accounts with oAuth.

eM Client for MacOS

• Open the Terminal
• Execute this command:
• defaults write com.emclient.mail.client AllowExchangeOnlineOAuth -bool TRUE
• Run eM Client and use the automatic setup to set up your accounts with oAuth. 

WARNING: If you use this work-around please make sure to disable the 'Offline Address Book' service during the last step of the setup.It is not compatible with the oAuth setup and could cause additional problems with the setup.

Note: These same steps can be used to downgrade from a BETA version to the current eM Client official version - just uninstall the BETA and reinstall current version from the website

Our databases are not backward compatible for older versions and once you upgrade your database to accommodate the new version, you cannot just simply install an older version over it.

If you have a backup of your database from eM Client 9 or older you can skip any export. If not, you will need to export local data before the downgrade to keep them.

For accounts set up with IMAP or EWS protocol this is not an issue, as setting these accounts anew will synchronize messages and folders back from the server.

For POP accounts and any data in Local folders, export them first via Menu > File > Export and once you downgrade, you can import them back via Menu > File > Import.

The steps to downgrade on Windows are to:

• Export any local data you need to keep (menu > File > Export)
• Uninstall eM Client 10
• Either delete the database or rename it
• Install your preferred older version of eM Client (You can find older versions in our Release history)
• Restore from the backup (Menu > File > Restore) or create your accounts anew and import your local data back in (Menu > Tools > Accounts, Menu > File > Import)

If you want to just rename your database, the default location is in C:\Users\%username%\AppData\Roaming\eM Client

The steps to downgrade on macOS are to:

• Export any local data you need to keep (File > Export)
• Uninstall eM Client 10
• Either delete the database or rename it
• Install your preferred older version of eM Client (You can find older versions in our Release history)
• Restore from the backup (File > Restore) or create your accounts anew and import your local data back in (eM Client > Add account, File > Import)

If you want to delete or rename your database, the default location is in /Users/User Name/Library/Application Support/eM Client

If you upgraded by accident and aren't sure if you need to downgrade manually, please see the article on this topic - This version of eM Client is newer than what your current license permits.

If you use Google or Yahoo accounts your accounts might have stopped synchronizing after the upgrade. This is most commonly caused by external apps like Antivirus, Firewalls, VPNs, etc. which are blocking the new eM Client 8 for your safety because the program is new and therefore not in any trusted databases of these programs.

We have seen this often happen with Avast, Kaspersky and AVG, though others could cause the same problem.

Adding eM Client to exceptions in these apps and disabling any mail shields should resolve the issue.

We also recommend reporting this to the provider of your security app, so they can update their records and not block eM Client in the future.

You can upgrade to eM Client 10 by going to Menu > Help > Check for Update or by downloading it directly from our website.

IMPORTANT: Pro users whose licenses are only valid for eM Client 9 and older need to buy a one-time upgrade to Version 10 first, or their program will be in offline mode until they upgrade their license or revert back to their previous version.

Pro users with Lifetime Upgrades don’t need to make any additional purchases to access paid features in eM Client 10.

After your 30-day trial of eM Client expires, you can either continue using eM Client on a Free License (with limited functionality) or purchase a Pro License.

After purchasing a Pro license, simply enter your Activation Key by going to Menu > Help > License.

Upon upgrading to eM Client 8, all your folders were “hidden” by default under a folder called 'More'. This was to give you a fresh start with your folder management and make the interface more streamlined.

To remove items from the More folder, simply drag them out of it. Once there's nothing in the folder, it will disappear. To add items back, simply right-click an item and select Hide.

Alternatively, you can manage which items are hidden under the More folder or shown on your folder list by right-clicking your email account name in the folder list and selecting Show/hide folders.

Previous versions of eM Client had several important features (such as Settings, Operations and Accounts) which were embedded under Menu > Tools. Therefore, a lot of our documentation and help articles written before the release of eM Client 8 in June 2020 have instructions that follow that pathway. With eM Client 8, we promoted some of these frequently used features to just be under Menu. Additionally, some features (such as Categories and Smart folders) have been renamed.

The release of eM Client 8 has brought enhanced search capabilities, including searching in the text of attachments and on IMAP and Exchange/Office365 servers. Sometimes though, searching through the mail server does not return correct/expected results, so it might be beneficial to turn off server search and search locally within eM Client instead.

To do this click on the down arrow v on the right side of the search bar and deselect Use server search if available. Also, while you’re in this search menu, double check that you’ve selected the correct search parameters, such as searching in All folders and searching for your keyword in the Subject, Sender, Recipients, Body and Attachments fields.

Read more in our blog: Search Like a Pro in eM Client

Most users nowadays have high-speed internet connections and therefore an explicit progress bar for sending messages was no longer necessary in Version 8.

However, if you still want to monitor the progress of your sent emails and updating folders, you can open the Operations window by going to Menu > Operations.

If you want the Operations window progress bar to always be displayed as you send and receive messages, you can turn on this feature under Menu > Settings > General > General > Operations Window and select the box for Show window on send and receive.

When you go to type in a name in the To: section, if there is an X button on the right side in the suggestion list, then it can be deleted from the history of recipients via click on that button.
Otherwise, the unwanted contact must be deleted from your address book or the messages sent to this email address from the Sent folder.

You can also adjust your suggested recipients list by going to Menu > Settings > Mail > Compose > Email Address Suggestion.

Suggestions based on messages in Sent folders and Recipients history based on your use in eM Client can be turned off; suggestions based on your saved Contacts cannot be disabled.

This is a known issue with some Gmail events and system notifications, you can resolve this by unchecking the Use system notifications box in Menu > Settings > General > Notifications.

We believe that the slowness of the new version is likely due to the attachment indexation and folder syncing. You can try leaving eM Client running overnight so it can complete this process.

Alternatively, you can run the eM Client application with a disabled indexer by pressing the Windows key and R key at the same time and entering the following command:

"C:\Program Files (x86)\eM Client\MailClient.exe" --disable-attachment-indexer

(Unfortunately, there's not currently a similar workaround for Mac OS)

We’re also working hard on fixing the speed issue and bringing you better performance with future updates.

Generally, Pro Support is only available to Pro License holders for one year after their purchase, otherwise we direct Free users to our Support Forum.

However, since the new eM Client 8 was recently released, everyone is treated as a Pro user for a month and is contacting the Support Team for a large range of issues. This has greatly increased our number of new support tickets to 100s every day and created a backlog. Some of the issues are bugs that our users have caught and we can pass on the information to our developers to fix and make eM Client better for everyone.

We’re happy to help you and we promise that your ticket has not been forgotten or lost, but your patience is greatly appreciated during this time.

This is likely caused by the system notifications from your operating system. Try going to Menu > Settings > General > Notifications and disabling the "Use system notifications box". Sometimes the system notifications from Windows misbehave and don't work correctly.

When you disable them, the native notifications for the eM Client Application take over and are more reliable.

If you get the following error:

[Google Contacts]Uploading item(s) to folder '[email protected]/Contacts' failed due to the following error: Execution of request failed: https://www.google.com/m8/feeds/contacts/default/full (Invalid request.)

The first thing you should know is that most of the "folders" of Google's mail, contacts, tasks, calendar, etc. are just a complex Tag system that's pretending to be folders.
When objects (messages, events, contact entries etc.) are without a Tag to sort them somewhere, strange things and errors start to happen. Understanding that will help you understand the rest of the explanation and the solution.

It seems that if you click the orange + New > Contact button then it will typically default to the root /Contacts folder, which is what's causing your error. If you're creating a new contact using that method, you must either select a Tag to apply to the folder or select a subfolder.

The way to change the default is to select any of the subfolders before clicking the orange + New > Contact button. Then it will automatically apply a tag to the contact and it won't trigger the error.

To fix the rest of your contacts that have this "No Tag" error, the easiest thing to do would be to go to the Contacts folder and sort all of your contacts by Tag in ascending order. This will cause all your "unsorted" contacts to appear at the top. Drag all of the unsorted contacts into any of your subfolders and this will apply a tag to them and stop the error. It could also be helpful to click the "select" option so that you can easily select multiple entries at once.

After uploading your Public Key to eM Keybook, you might have received a message saying:

Uploaded Public Key not Verified

Public Key John Doe for email address [email protected] was uploaded to eM Keybook, but has not been verified yet. Should eM Client keep monitoring for incoming verification emails?

This occurs when you have not yet checked your email to confirm that you would like to upload your Public PGP Key to eM Client. The message you should be looking for is called "Verification email from eM Keybook" and it will be sent from [email protected].

Furthermore, some email accounts (such as @seznam.cz, @yahoo.com, or @aol.com) have a problem if checking the message through normal means does not trigger the confirmation.

The workaround for this problem is as follows:

1. Right-click on the "Verification email from eM Keybook" message in your list of emails in your inbox and select "Save as" and then save the email as a .eml file.
2. With this .eml file you exported, go to your file explorer in Windows where you've saved it on your computer and open the file with eM Client.
3. When the .eml file is open click Menu > Message > Copy to Folder
4. Choose where you want to save a copy of the message in eM Client.
5. Navigate to where you saved the file within eM Client, and it should be displaying/working correctly and the verification will trigger.

eM Client uses external service for translations, so it has to pay for each translation made through its interface. For this reason, Free license users have limited access to this feature.

There are no limits for the PRO users.

Read more in our blog: On-the-fly Email Translation in eM Client and in the Documentation: Spell-checker and translator

Google unfortunately doesn’t support recurring tasks, the information about recurrence is saved locally in eM Client. If you remove and add your account again this information is lost, because the local data has been cleared and the newly synchronized data from the server does not contain the recurrence information.

Some servers might not support distribution lists and can therefore try to change the list into a regular contact, leaving only the first email address. To prevent this, please save your distribution lists into eM Client’s Local folders. The list will not be synchronized but you will be able to use it from the application’s interface.

Read more in the Documentation: Distribution List

Individual emails can now be saved as a PDF file – just right-click the message and use the 'Save as' option. You can then choose if you want to save the message into an EML or PDF file.

The convenient 'Move to Archive' button and shortcut is now available for all IMAP and Exchange accounts, the feature will create an Archive folder directly inside that account so your messages stay on your mail server.

To get more space for your message list and message detail, you can now minimize the left pane as well.

You will still be able to access your favorite folders, inboxes of all the accounts and all the left pane sections like Calendar, Contacts, Tasks, Notes and the All Attachments View.

Yes, the settings have a handy search field in the top left corner.

Yes, there is a calendar item in the right sidebar which contains just the 'Today' column from the Calendar section and you can keep it at hand when working on your emails or any other part of the program.

You can set up and manage some of the rules directly on the server for Exchange, Gmail and IceWarp accounts.

Next to the 'New rule' button in the Rule window toolbar you can now select from Local rules and your accounts' specific server rules.

When the rules are on the server instead of just in eM Client they will be applied to new messages, even when eM Client isn't running. And if you use eM Client on numerous devices, you don't need to set up or copy the rule to each device separately.

The Snooze feature is available in the main toolbar and can be used to remove a new message from your Inbox for a specific amount of time before returning it back into the Inbox as a new message. This makes Inbox zero easier as you can deal with messages once you are ready or have time for them instead of having them clutter your incoming mail folder.

Read more in the Documentation: Snooze

eM Keybook is a public encryption key directory managed by the company eM Client.
It’s an online service where you can upload and manage your public keys so anyone can easily send you encrypted messages and you can easily get public keys of the recipients you want to send encrypted messages to.

eM Keybook stores Public keys that you upload and allows for the exchange of Public keys between all eM Client users. If the contact you’re writing a new message to has a Public key in the eM Keybook directory, eM Client will automatically download and apply it for you when you enable encryption for your message.

eM Keybook does not save nor have access to any of your Private keys or passwords. It does not give anyone access to your encrypted messages or save any of your encrypted messages on our servers.

Check out the article about Signing and Encryption for additional information.

Read more in our blog: eM Keybook: Email privacy for everyone and in the Documentation: About eM Keybook.

During the account setup you will be offered PGP encryption for your account.
With PGP keypair you can digitally sign your messages, so the recipients of your emails can be sure the message from you was not tampered with and they can send you encrypted messages that only you can read!

Read our manual on how to use email encryption.

Read more in our blog: PGP: Encrypt & sign emails in a few clicks and in the Documentation: PGP.

In general, the system requirements will be dependent on the current version of .NET used in eM Client. At this time, it is .NET 6.

Windows

• Windows 10 or higher - systems with up-to-date security from Microsoft are recommended, but with some tweaks (like manually enabling TLS 1.2 Win 7) eM Client can still be used on older systems, it is not blocked from our side, but we cannot guarantee it
• 350 MB of free space for installation.
  • You will need additional space for data, which can be stored on a different drive if needed! Since eM Client has no limit on the number of emails/data stored in its database the only limitation is the capacity of the hard drive installed in your PC. Shared folders or network drives are not recommended due to potential database conflicts.
• Minimum of 2 GB of RAM and 1.6 GHz CPU
• Recommended for memory and processor - the more GB and GHz you have, the better :)

Terminal servers

eM Client can, of course, be used in a Terminal Server environment as well. Windows Server 2012 and newer Windows server versions are supported.

Mac OS

We officially support only the last three macOS versions (but some older versions, such as eM Client 8, can still run on El Capitan too).

eM Client is distributed as a standard MSI package so you can use standard MSI parameters. You'll probably want to use /quiet or /qn for silent installation. All the MSIEXEC parameters should be supported though!

eM Client has three custom paramaters if you need a silent install:

All versions of eM Client can be found in our Release history.

There are two different ways to deploy eM Client and activate the license automatically:

1.        Deployment via Command Prompt

If the goal is to simply install eM Client and load the license, use the following command in Command Prompt: MailClient.exe /activate {insert activation key here}

Similarly, you can easily deactivate eM Client license by using: MailClient.exe /deactivate

2.        Automatic deployment

If a bit more complex setup is required, you can use our "Automatic deployment process" which allows you to push various sets of settings along with the license key too. Find more detailed instructions here. 

Read more in our blogs: eM Client Server Settings & Advanced Startup

Autodiscover is supported in eM Client so you should be able to set up all accounts easily.

OAuth for Google accounts and Exchange is supported as well.
OAuth for Google is fully automatic.
OAuth for Exchange is automatic in eM Client 8.2, for older versions please follow these instructions.

In case you need to set up an account manually, choose Mail > Other in the account setup window.

The License Manager allows you to manage all your licenses and their activations from one place.

By manage, we mean that you can activate/deactivate them and also push various settings centrally.

Watch our video tutorial or read the Licensing guide for more detailed instructions.

It is not possible to connect to the License manager via TLS 1.0 and 1.1, you need at least TLS 1.2 to be able to connect to the License manager.

In case you need to limit certain functionalities in eM Client (restrain your users from using personal chat accounts or limit the number of email accounts they’re allowed to use) use the Server settings feature in License manager to push custom restrictions that limit eM Client’s capabilities.

For example:

<settings>
<restrictions>
<ChatRestriction><AllowedHostRegExp>emclient.com</AllowedHostRegExp></ChatRestriction>
<AccountCountRestriction><AccountCount>1</AccountCount></AccountCountRestriction>
</restrictions>
</settings>

For a complete list of restrictions contact our support department at [email protected].

If you have trouble connecting to the license server to activate your license, make sure to add https://licensing.emclient.com/ and https://licensemanager.emclient.com/ to exceptions in any security apps, VPNs or Proxies.

You can overview your licenses using our License manager and even remotely manage specific activations. Find out how to manage your licenses or assign centralized settings to your activations.

If you cannot find your License manager login credentials, you can reset them here.

Please keep in mind that the credentials are case-sensitive and do not contain any whitespace characters.

The easiest way of moving your database to another device is to make a backup of your current database in Menu > Backup.

eM Client will back up the whole application database into the folder selected in Menu > Settings > General > Backup. You can also enable the option of automatic backups in regular intervals here.

You can transfer this backup to a device of your choice and restore from it through Menu > File > Restore.

Read more in our blog: How to work with automatic backups in eM Client

You can change the Reply-to address for your messages via the Menu>Message>Reply to address option in the Compose message window.
You can either select one of your eM Client accounts or use a custom address.

On June 15th, 2021 Google phased out the Google Contacts API, which is a protocol we used for synchronizing Google contacts in older versions of eM Client. If you are still running one of these versions, you will encounter this error:

[Google Contacts] Synchronizing folder '[email protected]/Contacts' failed due to the following error: Execution of request failed:

(Contacts API is being deprecated. Migrate to People API to retain programmatic access to Google Contacts. See https://developers.goog.ecom/people/contacts-api-migration.)

We have switched to the current People API in eM Client 8.2, so if you are running any of the older versions, you need to either install the update (if your license is valid for eM Client 8) or upgrade your license and then install it.

You can of course keep using the older version if you prefer, but you will not be able to synchronize your Google contacts anymore, they will only be stored locally as they are.

To avoid the error pop-up, you can work around this situation by copying the contacts to Local Folders and switch off the Google Contacts service in Accounts settings.

By default, eM Client will show all messages with HTML formatting. This means you will be able to view the font type, color, inline images, links, and other formatting details as the sender designed them.

If you prefer to view all messages in Plain text, ie. all colors, formatting removed, for easier reading you can do so in Menu > Settings > Mail > Read by checking the option to "Read all messages in Plain text".

Starting with eM Client 8.2, you can also switch the view of a single message on demand and view it in a different format than your default setting.

Simply right-click the message and switch the Format to HTML or Plain text, depending on which one you need to take a look at. You can also find the same setting in Menu > Message > Format.

Go Daddy servers are rejecting the version of Chromium in our application, so the secure OAuth login in our native browser window during the account setup could not finish. The error messages that shows up when this happens is:

Your Browser is a bit unusual...
Try disabling ad blockers and other extensions, enabling javascript, or using a different web browser.

We have created a fix version which will use your default web browser instead of our native window for this authentications. Please download this version here: https://www.emclient.com/dist/v8.2.1509/setup.msi

You can start an Online meeting instantly via the New > Online meeting option.

However, to plan one in advance, you need to use the New > Event option instead.
On the first run you can decide whether you want to create a standard event or online meeting.
You can also select a default for future cases or just pick each

You can of course then choose which Online meeting provider should be user or even change your mind about the event type while creating the event itself.

Read more in our blog: How to set Online Meetings in eM Client

Sharing in eM Client is done via Delegation for Exchange (EWS) accounts.

You can find the Delegation setting via the Menu>Accounts section in the Exchange Web Services tab of the given account or via right-click on the specific account in the folder list.

• In the Delegation window or section click the Show... button next to "Accounts you can access:"
• The "Delegated accounts" open will open.
• Click the Add button on the Delegated accounts window.
• The "Select users or groups" window will open.
• To add the delegated account you should have access to, enter it under "Enter the name of users or group:". E.g., [email protected]. Then click the Search button.
• That user will be displayed under "Group or user names". Click on the proper account name and click the Ok button.
• Click the Ok button on the Delegated accounts window as well and close/save the original Delegation window.

If the shared folders do not appear right away, try closing and re-opening the eM Client app.

This means that your license is activated on the number of devices your license was purchased for. You need to ‘free’ up some seats to use the same license on new devices. Either deactivate the license on the older device (Menu > Help > License) or if you do not have access to it anymore, use our License manager to remotely deactivate the older activation.

UPDATE 9/30/2021: Microsoft has now fixed their OAUTH and the automatic setup will work again.

On September 24th, 2021 Microsft made some changes on their mail servers, which disabled OAuth login for the IMAP protocol on their accounts. Unfortunately, this affected all outlook.com, hotmail.com, live.com, msn.com and other free Microsoft account domains in our program, since we used this secure login method as default.
You can tell if your account is affected by a red triangle shown next to your account name. This account also cannot receive any new messages.

The workaround at this time is to set up the account anew manually either as Exchange or as Other (IMAP) to avoid usage of the IMAP-XOAUTH2 login.

Note: If you use 2-factor verification, you might need to create and use an App password for eM Client.

Manual IMAP setup (Other):

• Go to Menu > Accounts.
• Click the '+Add account' button.
• In the New Account window select Mail > Other.
• Insert your Microsoft account address
• Select IMAP.
• Insert these settings for Incoming server: imap-mail.outlook.com
• Outgoing server: smtp-mail.outlook.com
• Finish the rest of the setup
• Delete or disable your previous IMAP setup

Exchange setup:

• Download the attached registry file in this article.
• Run it while eM Client is still closed and confirm the changes it will make.

If you'd like to add the needed registry key manually instead of using our provided file:

• Run Regedit
• Go to Computer\HKEY_CURRENT_USER\Software\eM Client
• Add the DWORD item AllowExchangeOnlineOAuth and set its value to 0
• Then run eM Client 

To set up the actual account:

• Go to Menu > Accounts.
• Click the '+Add account' button.
• In the New Account window select Mail > Exchange.
• Use your Microsoft mail address for both the Email and Username fields. 
• Finish the rest of the setup
• Delete or disable your previous IMAP setup. 

One of the largest certificate issuers Let’s Encrypt had their root certificate validity end on 30. 9. 2021. In case your validity has not been renewed, an error might occur with eM Client licensing and other programs as well.

How to check your certificate validity in Windows?

1. Navigate to the Start menu in Windows and type certmgr
2. Open the Certificate Manager app by pressing enter and allow changes
3. In the left window navigate to Third-Party Root Certification Authorities
4. Click on the file Certificates that shows up
5. Go to the right side and find ISRG Root X1 in the ‘Issued to’ column- it is ordered alphabetically
6. Check the expiration date in the third column

Now, in case your certificate has validity to 30.9.2021 it means it is past due. 

Here is how to solve the problem.

1. Download the attached file 'ISRG Root X1.cer' and open it on your PC
2. A window pops up, click on Install Certificate
3. Click Next on the following screen
4. Check the option to Place all certificates in the following store
5. Click Browse and select Trusted Root Certification Authorities and click OK
6. Click on Next and then Finish to import the certificate

How to solve this issue on Mac?

Remove the old ISGR Root X1 certificate from your Keychain and then download the attached file 'ISRG Root X1.cer'

When using an account that is running on an Exchange server provided by Microsoft, you can encounter this error:

Known Microsoft Exchange server error "User is authenticated but not connected" has been encountered on IMAP connection. This issue is temporary and should be automatically resolved by the server. If not, please contact your mail provider.

This error means that the authentication process for your account was succesfull, but for some reason the mail server is not giving eM Client access to the account data, so it cannot synchronize your messages into the app.

This can have a few different causes - sometimes it's a temporary issue that will go away on its own, but lately we had this issue reported with brand new outlook.com accounts that do not have IMAP protocol allowed.

• Sign in to your Outlook account via the webmail (https://outlook.live.com/)
• Go to Settings > Mail > Forwarding and IMAP > Login > enter your credentials again
• Enable Allow devices and applications to use POP and Allow devices and applications to use IMAP
• Save your settings and click the Refresh button.

If you already have IMAP allowed and the issue does not clear on its own, reach out to your admin or provider of the email account so they can fix the issue.

If this is happening with an email account that is set up using an Alias and not the Primary email address, try setting up the account anew using the primary email address to see if that resolves the problem.

This article applies to eM Client 9 and newer.

With the introduction of Avatars in the message list the behavior of marking message as read/unread and assigning a flag has changed. 

At first, you see the unread orange dot as usual:

But if you hover, the Flag option shows up instead so you can easily flag the message in one click.

The flagged/unread message then looks like this:

So that means you can easily add or remove the flag in a single click, but this functionality is not available for switching the unread state of the message to read and vice versa.
Once the message is marked as read, you cannot set it back via the message list icons - only through the mark options via right-click, toolbar button or the keyboard shortcuts (Ctrl+Q for Read, Ctrl+U for Unread).

Many cons and pros of having both buttons available and clickable were considered, but in the end, a design decision was reached - the unread dot does not look good when it is not centered with the avatar (and only one icon is shown at the top).
When trying to display the unread dot and flag only on hover (same way as in eM Client 8) it causes the icons to change positions and may lead users to click the wrong icon by accident. This is why we decided to show only one centered icon in this situation.

You can also enable the option to "Always show "read" and "Flagged" icons on mouse hover" in Menu > Settings > Mail > Read under the Message List settings.

If you would like to avoid this completely you can return to the same setup as in eM Client 8 if you disable the Avatars in the message list. 
Simply right-click the top of the message list and open Columns configuration. 
Select the Avatar from the "Show these columns" list on the right and then click the Remove button, which will move it to the list on the left, "Available columns".

This article applies to eM Client 9 and newer.

eM Client 9 introduces contact avatars in the message list, but this can make other details harder to see in a more compact view or on smaller monitors.
You can easily disable the avatar feature or at least resize the avatars to take less space.

Resize Avatars:
Go to Menu > Settings > Mail > Read and scroll down to the Message List settings.
There is an Avatar size: option which you can set to Regular or Small.

Remove Avatars:
Right-click the top of the message list and open Columns configuration.
Select the Avatar from the "Show these columns" list on the right and then click the Remove button, which will move it to the list on the left, "Available columns".

This article applies to eM Client 9 and newer.

When you assign a tag via right-click on the message, using the Mark button in the top toolbar, or even using the Tag bar above the message list, the menu closes once you click one of the available tags.
But sometimes you might want to add more than one tag and this can cause a lot of tiresome clicking around - not anymore. Simply hold the Ctrl or Shift button while selecting a tag and the menu will stay open until you assign all the tags you want and lift your finger off the Ctrl or Shift button.

If you use Windows system notifications for eM Client and eM Client is already running, you can encounter this error when trying to perform an action directly from the pop-up:

Communication with the previous instance failed. The other instance has to be ended in order to start the application.

This happens if you run eM Client in administrator mode, which is not compatible with Windows notifications. To avoid this issue, make sure to run eM Client as a regular user instead of 'as admin'.

eM Client 9 introduces synchronized signatures, but Microsoft has released an update to some of their servers which unfortunately locks this feature for Exchange Web Services protocol. If you do not see the 'Synced from EWS' signatures for your Outlooks/Exchange accounts please try this workaround:

• In the Outlook Web Application go to Settings > View all Outlook settings > Mail > Compose and reply.

• After that delete all signatures using the Delete button. 

• Then, in section Select default signatures change values For New Messages and For Replies/Forwards to No Signature.

After deleting all signatures Outlook should create the new signature with the name Outlook Web Signature, which will represent your synchronized signature. This signature should synchronize to your eM Client and can be edited.

Note: in case the Outlook Web Signature was not created, please contact Microsoft support with a request to block Roaming signatures.

Some users with the latest eM Client 9 for macOS might have encountered an issue where their messages never finish loading, even though clicking REPLY shows that the message text is available. We have tracked this issue to App-specific region settings, so if you have encountered this issue, please follow these steps:

1. Go to System preferences on your mac device
2. Open Languages and Region
3. Click on the Apps section
4. If there is any app-specific setting for eM Client, remove it from the list (especially if the region is set to Sweden or Norway).
5. Save this change and reload eM Client - your messages should show up correctly now.

Alternative, if there was no app-specific setting

1. Add eM Client here and set English as a language.

The Unauthorized License Detected warning should show up if you are using an illegal version of eM Client, which is detected by your System checking eM Client's program file signatures. Recently, some users encountered this warning even with a valid program and license, because of an outdated certificate in their device.

In the current versions released after January 2023, eM Client now uses Azure Code Signing to sign its program files. The Windows version of the app is signed using a Microsoft certificate to prove its validity and safety when used on Windows devices.
So if you encounter this warning, please make sure to have the latest Windows update on your device installed.

If you do have the latest updates, you can check and/or install the missing certificate directly.

Go to the eM Client installed program files, default C:\Program Files (x86)\eM Client.
Find MailClient.exe and open its Properties.
Open the Digital Signatures tab.
Click the eM Client s.r.o. signature in the list and open Details.
Check the signature here.
If it's shown as invalid, select the Microsoft signature at the bottom and open its Details.
Then click View Certificate button and check the Certification path.
if there is any Microsoft certificate missing (a red X over the certificate icon), install it or add it to trusted certificates.

You can find Microsoft certificates in their repository here: https://www.microsoft.com/pkiops/docs/repository.htm
Search for the name of the missing certificate, download it, and when installing it make sure to select the folder (store) manually and save it into Trusted Root Certificates Authorities.

That should resolve the issue - restart your device and start eM Client again.

For eM Client 9.2.1222 and older you can use this solution:

To check if you are affected by this problem, please check this webpage: https://trusted-root-g4.chain-demos.digicert.com/
If the page shows a warning, you need to update your root certificate DigiCert Trusted Root G4.

This can be sorted by installing available security updates for your Windows or you can find the updates manually here: Support for urgent Trusted Root updates for Windows Root Certificate Program in Windows

You can also manually download the certificate here: 

DigiCert Root Certificates | DigiCert.com

Direct download for DigiCert Trusted Root G4 | DigiCert.com

To avoid similar issues in the future, make sure you have the Windows Root certificate AutoUpdater active.
This can be changed in Windows registry directly in HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\SystemCertificates\AuthRoot
Just make sure the DisableRootAutoUpdate key is set to 0.

If the issue is not resolved even after manually updating or re-installing the missing certificates, you can reinstall the app in case the issue was in the corrupted program files.
Follow these steps:

- Uninstall eM Client (do NOT delete your database)
- Make sure the eM Client folder and files are gone from C:\Program Files (x86)\eM Client or C:\Program Files\eM Client
If not, delete them manually.
- Then download and install the app for your licensed version from an official file downloaded from our website: https://www.emclient.com/release-history

In June 2022 Google discontinued their support for less secure login methods for their email accounts. The solution to this is to set up your account anew using the secure OAuth method.
Please read more here: Google ‘less secure apps’ access and what it means for eM Client

If you are looking for these arrows in the message list, but cannot see them, don't worry - you can still enable them in eM Client.

Go to Menu > View > Conversations and change your setting from "Show Conversations in All Views" to either "Show Conversations in Message details only" or "Disable Conversations.

The feature cannot be used when Conversations are enabled in all views because the arrow is tied to a single, specific message while the full Conversations show the whole thread in the Message list, so it cannot show this icon.

When a new official update is ready, eM Client will offer you an 'Automatic update' next time you run it. We recommend installing the update but if you don't have the time and would prefer to install it later, you can click the 'Later' button and choose to postpone the update for 1 Day, 2 Days, 3 Days, 1 Week or 1 Month. If you click the X button in the top right, the Update will not be installed and the window will pop up on the next startup.

You will never receive an update prompt that your activated license is not valid for, but if you'd rather just use an older version indefinitely and don't want to reject updates every month, there can be a manual update limit set on your license and activation.
Pro license users can set this limit (called "Set version") via the License Manager. Just open your Licenses or Activations tab and click Set version for your license. Select the version you want to use from the list and save this setting.
Free license users can send a request for an update limit to [email protected]

eM Client will always try to use the newest TLS protocol available, which of course includes current TLS 1.2 and TLS 1.3.

If you've received any of the following emails from your provider:

We are contacting you because one or more of your devices or programs uses the TLS 1.0 and/or TLS 1.1 encryption protocols to connect to our email servers, or is using an unencrypted connection.

We will no longer support TLS v1.0

Then you shouldn't have to worry with eM Client, as it can and will use a more secure connection when available.

If you are using Windows 7 or older system though you might need to make sure that your device supports TLS 1.2, but it can be manually enabled on Windows 7 if needed. Here's a tutorial you can follow or you can run this Registry file.

TLS 1.3 is the fourth version of the commonly used protocol for secure communication on the internet. Unfortunately, not all apps and systems can work with it correctly now, such is the case with Windows 10.

You can view which Windows versions can work with TLS 1.3 on this Microsoft page: TLS protocol version support

Gmail OAuth login on Windows 10
When TLS 1.3 is enabled, this can cause issues with the Google accounts OAuth - the authentication window will show up, but the setup can never be finished, the OAuth window will keep reloading and the eM Client app will not be able to connect to the Gmail server to synchronize your data.
The solution is to run the DisableTLS1.3.reg file attached to this article, start eM Client, and try the Gmail account setup again.

A similar issue can affect Kerio accounts when using Windows 10 as well. The solution is also to disable TLS 1.3 until Microsoft provides the required update to Windows 10.

This solution can also work if you encounter this error when sending or receiving an email:

"Cannot determine the frame size or a corrupted frame was received."

Update 3/2/2023: We have created an alternate workaround which uses AirSync instead of SMTP for sending emails, read more here. 
The new workaround is for eM Client 9.2, so if you use an older version of eM Client and do not wish to upgrade, please feel free to still use the workaround on this page.

In the past few days, users of @outlook.com, @hotmail.com and other free Microsoft email accounts might have encountered an issue when sending emails. 

[SMTP] MailClient.Accounts.AuthenticationAbortedException: Authentication aborted.

This issue is caused by a new problem on Microsoft's modern OAuth login method, settings up the account with an older version of the OAuth authentication in the meantime will work.

For the workaround, follow these steps:

Windows

• Close eM Client.
• Revoke permission for eM Client in your Outlook.com account: https://account.live.com/consent/Manage
• Download and run the registry file in this article - useoldoutlookcomflow.reg
  (this file can be downloaded at the bottom of this article, in the Attachments section)
• Open eM Client and log in using the OAuth window that pops up.

macOS

• Close eM Client.
• Revoke permission for eM Client in your Outlook.com account: https://account.live.com/consent/Manage
• Open Terminal and run this command: defaults write com.emclient.mail.client UseOldOutlookComFlow -bool TRUE
• Open eM Client and log in using the OAuth window that pops up.

Once Microsoft fixes this issue, you can either keep the older OAuth or remove the workaround with these steps, which are just the reverse of the previous ones:

Windows

• Close eM Client.
• Revoke permission for eM Client in your Outlook.com account: https://account.live.com/consent/Manage
• Download and run the other registry file in this article- removeoldoutlookcomflow.reg
• Open eM Client and log in using the OAuth window that pops up.

macOS

• Close eM Client.
• Revoke permission for eM Client in your Outlook.com account: https://account.live.com/consent/Manage
• Open Terminal and run this command: defaults delete com.emclient.mail.client UseOldOutlookComFlow
• Open eM Client and log in using the OAuth window that pops up.

eM Client can work with any email account that allows connection to the mail server via POP, IMAP or Exchange (EWS) mail protocol.

Unfortunately, it seems BTconnect.com is making changes to their mail servers and ending support for all external mail apps, except for Outlook mobile apps.

Please read more details in their article: The security of btconnect.com email is being improved

When eM Client uses its Automatic setup for email accounts, it uses your mail server's Autodiscover settings to get the correct settings for all available services for your email account.
But it also checks some other details before, and even after if no autodiscover file is found.

The order in which eM Client check for these settings is as follows:

   1. Registry check - first eM Client checks your system registry to see if you have any overrides set for your account - if so, these settings are used.

   2. Service Connection Points (SCPs) or Active Directory for on-premise - some services publish information about their existence by creating SCPs, which client application can use for connection.

   3. SRV records in Domain Name System (DNS) - these identify computers hosting specific services and their ports, which are then used for the account setup.

   4. Office 365 - check if the domain and email are stored on a paid Microsoft 365 server, then use Office 365 setup (Exchange).

   5. Guess autodiscover address based on the domain name (https://your-domain/autodiscover/autodiscover.xml, https://autodiscover.your-domain/..., ...)

   6. Guess IMAP/POP and SMTP settings - try standard/common host names and port number until the mail server responds.

If all of these fail the program will ask you to use manual setup instead under Mail > Other.

When creating a custom rule in Menu>Rules you might have tried to use a condition to find specific word in a mail header.

Trying to add a single word will produce the error: Header words must be specified as "Name: Value" pair.

This is because emails have a numerous mail headers which contain specific information - these include From: or Sender: for original sender of the message, Date:, Received: information, etc. If you're creating your rule based on a specific message, you can check the actual headers by right-clicking inside the email > Open Mail Header... and find which header name your word is in.

Then just use both the header name and the word in the format Name: Value in the rule, for example From: John will affect all messages where 'John' is part of the visible name or email address of the sender.

Email provider GMX allows its users to enable more secure authentication for their accounts, the two-factor authentication - https://www.gmx.com/security/2fa

When you enable this additional security layer, you need an app password for other apps to login into your GMX account for you.
Most email service providers will use the same app password for one app, but GMX needs this password per each protocol/service you plan to use in a 3rd party application.

That means that for eM Client you will need three app passwords total - one to receive email via IMAP service, one to send via SMTP, and one to synchronize your contacts and calendars via CalDAV/CardDAV service.
Trying to use the same password on the whole account will result in rejected logins and might resolve in issues connecting to GMX Mail or GMX Calendar depending on where you use the app password.

We support

XEP-0004
XEP-0030
XEP-0047
XEP-0054
XEP-0065
XEP-0066
XEP-0077
XEP-0085
XEP-0092
XEP-0231
XEP-0280
XEP-0313
XEP-0363

and a proprietary XEP between eM Client and IceWarp services for file sharing

If you experience problems with eM Client not behaving as default mail client for opening mail files, using Mailto links from web, etc. there might be a specific default setting missing in your system.
The best way to resolve it is to go to your System settings > Apps and then 'Set defaults by app' (Windows 10) or 'Default apps' (Windows 11).

From the list of installed apps select eM Client and then assign all available file and link types to make eM Client function fully as a default app for all email and calendar functions.

If you experience issues using the Send to > Mail recipient function in Windows, the attached registry file can help - simply download it and run it.

Mobile versions of eM Client with email functionality are completely free to use, with all its features. We may change our approach in the future, but for now, the mobile app will stay completely free and does not need to use a license.

No, you currently do not need a license to use eM Client for Android and iOS.

You can look up eM Client in your Apple Store or use this link.

You can look up eM Client in your Google Store or use this link.

Yes, the mobile version of eM Client for iOS and Android has also been implemented to work on tablet devices.

Open the menu via the top left icon and go to Settings at the bottom.
Click the ‘Help & Feedback’ option and then ‘About eM Client’.

Open the menu via the top left icon and go to Settings at the bottom.
Click the ‘Help & Feedback’ option and click the ‘Send log’ option.
A new message with the logs added as attachments will pop up, send it to the email address that is pre-filled.

To select the first message, long-tap on the given message. 
Then single-tap other messages to add to your selection. 

Clicking on the selected message again will remove it from the selection.

To select all messages click the button with the two circle checkmark icons in the top right corner

Some users experience issues with their Exchange accounts on our mobile app, even though the same account connects correctly on desktop.

This is caused by incorrect NTLM implementation in the .NET platform, which our and many other applications use. This issue is usually triggered on Exchange accounts if you have "Extended protection" enabled on your server and it affects only mobile apps, not the desktop program.

Our developers have created a fix for .NET in its current version .NET 8 and .NET 9, and it should hopefully be merged soon.

https://github.com/dotnet/runtime/pull/102565
https://github.com/dotnet/runtime/pull/95898

Unfortunately, until that happens, we cannot provide any alternative solution - only wait for the fix to be merged into the .NET platform.

You can use the AI button in the message compose window to either draft your messages or edit them for you!
Read more details on this dedicated page.

You can customize the categories settings per each folder by right-clicking at the top of the message list and using the “Category tabs” options.
Use “Hide Categories Bar” to remove the Categories from this folder or pick and choose which tabs to add, remove or combine.

 If you want to fully turn off the feature, you can do so in menu > Settings > Mail > Categories.

eM Client categorizes messages based on its own algorithm, but of course, it might not match everyone’s preference.
You can easily drag a message into the desired category or right-click the message and select Category and then the specific category you want this message moved into.

Changing a category will also create a custom rule for this account - future messages from this contact will be organized into the same category. If you want to change category for all past messages as well, hold SHIFT key while dragging the message. To recategorize only the one specific message and to avoid creating a custom rule, hold ALT while dragging the message.

As eM Client learns your preferences when it comes to categorizing your messages, you will need to use these shortcuts less and less.

You can find all settings for this feature in menu > Settings > Mail > Categories.

You can enable the Recent message counters for your folders and category tabs - these will show the number of new, unread messages in your folders so you can easily take note when a new message just came in rather than just guessing based on the unread counter.

This feature can be enabled or disabled in menu > Settings > Mail > Read for folders (Show counter for recent messages instead of unread) or in menu > Settings > Mail > Categories for categories.

You can use the @ symbol to mention a specific contact in your email - this will add a name and link to the message body and add the email address to the To field.
This feature is useful when sending a message to multiple recipients as you can quickly distinguish which part of the message is addressed to whom.

Data files are separate databases that can be connected to your eM Client - you can mount or unmount them based on current need.
You can convert other message files into a new data file - such as PST or OST files, using the menu > File > Import option or mounting it via menu >Data Files section.

If eM Client is missing from your system "Share" menu, it is most likely missing from the location in System Settings/Privacy & Security/Extensions/Sharing

Please open the Terminal and run this command to add back any missing apps:
/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -seed

Recently this error started popping up for some Gmail accounts:

[Google Contacts] Synchronizing folder 'Your Google Account/Other Contacts' failed due to the following error: Parameter validation failed for "resourceName" : The value did not match the regular expression ^people/[^/]+$

This error means there has been a problem getting some contacts synchronized from the Google server, specifically in the 'Other Contacts' folder.
This folder works similarly to eM Client's Recipients history - it's Google's folder for saving email addresses you previously sent messages to, so these are usually not contacts created by you, but automatically by the server. Your contacts are in the main Contacts or My Contacts folder. 

Deleting the contacts from 'Other Contacts' and then repairing the folder in eM Client should resolve the issue.

Other Contacts cannot be deleted from external apps though, so you need to go to this page in your browser: https://contacts.google.com/other
Make sure you are logged in into the correct Google account and then delete the items in this folder.
Back in eM Client, open the Contacts section.
Right-click the Other Contacts folder and open Properties
Open the Repair tab and click Repair.

This will re-synchronize the folder and without the invalid contact, the error should not pop up again.

The Received header is not defined by eM Client, but the SMTP server that processes the message.

We send the EHLO command to the SMTP server as defined in RFC 5321.
Your mail server adds the full address-literal into the Recieved header, which is recommended by the specification.

User-Agent is also standard information given to the server, to identify the source of the email, though other apps can use different non-standard headers for the same reasons, such as X-Mailer (X-Mailer: iPad Mail (18C66) , X-Mailer: Microsoft Outlook 16.0,...).

So these details cannot be removed from your outgoing messages.

On December 6th 2024 some Google accounts stopped showing Birthday calendar. Unfortunately, the calendar is fully missing from the Calendar data we receive which is why the eM Client app cannot show it.
Birthday calendar is a special type of calendar so there is unfortunately no easy way to share it from the web interface and use it as an Internet calendar.
So far we noticed that Google accounts set to other languages (such as Czech) on the Google server are not affected as often as those set in English.

At this point, we can only wait for Google to resolve this strange error.

Other apps that use Google Calendar via CalDAV protocol (and not via Calendar API as eM Client) are seeing Birthday events inside the main calendar instead of a dedicated Birthday calendar.

If you set a custom location for your database and the location is not available (for example external drive that is disconnected), you might have trouble running eM Client.
To delete the custom storage location setting open the Terminal and run this command:
defaults delete com.emclient.mail.client DBLocation

Both Gmail and free Microsoft accounts (outlook.com, hotmail, msn, live, and other free domains provided by MS) allow calendar sharing from their web interfaces, but do not allow the sharing settings to be configured from third-party apps such as eM Client.

So to share these folders, you need to access the web interface and share the calendar there - but eM Client will be able to synchronize any calendars shared with you, so you can still view all the shared calendars from inside the program!

Update 10th July 2025: eM Client in versions 9.2.1628 - 10.3.2412 used AirSync instead of SMTP to send emails for free Microsoft email accounts - these are any accounts with domains @outlook.com, @hotmail, @live, @msn and other domains which Microsoft offered in the past, with all regional variants as well.
This change was made a few years ago when Microsoft broke SMTP Authentication for 3rd-party apps, making it impossible for us and many other apps to send emails.
You can read about this on our blog: https://www.emclient.com/blog/workaround-for-the-sending-issue-via-smtp-for-microsoft-outlook-com-accounts-570
Versions newer than 10.3.2545.0 now use SMTP again so the workaround below is no longer needed.

While AirSync does not suffer from the authentication issue at this time, Microsoft does not let it use ALL sending features - namely, any alias will revert to your primary email and send the email from primary address instead of your desired alias.
This, of course, does not affect users who don't need alias for these specific accounts, but if you need the alias feature to work correctly, you'll have to manually switch to SMTP.

Follow the steps below:

Windows

• Close eM Client.
• Open Start menu and type in REGEDIT and press Enter to open Windows Registry
• Go to Computer\HKEY_CURRENT_USER\Software\eM Client
• Right-click inside this section and create New > DWORD
• Name it UseAirSyncSendMail and save - this should set it to 0

macOS

• Close eM Client.
• Open Terminal and run this command: defaults write com.emclient.mail.client UseAirSyncSendMail -bool FALSE

Apple has stopped synchronizing tasks (which they call Reminders) using the standard CalDAV protocol starting with version iOS 13. 
Due to this change the tasks can no longer be synchronized not only with older versions of Apple apps, but also external apps like eM Client.
The sync vis CalDAV still exists and works, and it will sync data between older Apple apps and other apps using CalDAV, and for example between two eM Client apps, but not with the current Apple applications.
You can read about this on this Apple support page.

eM Client does not use AIA (Authority Information Access) to fetch intermediate or root certificates on demand, and this is intentional for security reasons.

On Windows, trusted certificate authorities (CAs) are managed through the system certificate store. Outlook and some other applications can trigger Windows to fetch missing certificates from trusted CAs when needed. eM Client, however, only uses certificates already present in the Windows store. If an intermediate certificate is missing, it does not try to download it via AIA or force Windows to update its trusted root list (which is normally updated periodically through Windows Update).

This behavior is designed to prevent a type of privacy attack: a malicious sender could include a URL in the AIA field of their certificate pointing to their own server. If your mail client automatically contacts that URL to retrieve a certificate, the sender would immediately know you opened their email.

To avoid issues, make sure to import certificates with their complete chain (including intermediate certificates) into the Windows certificate store in advance.

On macOS and iOS, some eM Client users experienced SMIME certificates error “unknown revocation status.” This also affected some HTTP services, such as the automatic translation.

This is caused by the fact that Apple’s system does not always properly handle certificate revocation checks after Let’s Encrypt deprecated Online Certificate Status Protocol (OSCP) method in favor of Certificate Revocation Lists (CRL). We suspect that Apple does not take CRL into account at this time and since OCSP is no longer available, the status is left "unknown."

eM Client offers a setting, IgnoreUnknownRevocationStatus, to control this behavior now, which has 3 options:

The default behavior since eM Client 10.3.2298 will now ignore this specific error, but you can use these commands to change it:

To explicitly allow SMIME certificates to work, run this command in the terminal:
defaults write com.emclient.mail IgnoreUnknownRevocationStatus -int 1

To Enforce strict validation (this might also block other HTTP services, including eM Client's translation, QR Import, EWS Servers and more):
defaults write com.emclient.mail IgnoreUnknownRevocationStatus -int 0

To return to default behavior:
defaults delete com.emclient.mail IgnoreUnknownRevocationStatus