Frequently Asked Questions

For admins

We’ve prepared a couple of answers to the most common questions about installation, setup, and general deployment of eM Client in organizations.
We hope that you can find your answer here, but if not, please let us know through the Community Support or the VIP Support. We will be happy to answer any other questions you may have!

Minimum system requirements


  • Windows 7 or higher
    (for XP compatible versions contact our support - although it is no longer a supported system, so we do not recommend its use).
  • 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 2008 and newer Windows server versions are supported.

 Mac OS

  • OS X 10.14 and the newer versions are supported.
    We officially support only the last three macOS versions but you can still run eM Client 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!


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

  • 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

  • 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.

eM Client setup and migration

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

OAuth for Gmail and Exchange is supported as well.
In case you need to set up an account manually, choose Mail - Other in the account setup window.

License manager

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. See our tutorial or read Licensing guide for more detailed instructions.


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 the above mentioned License manager to push custom restrictions that limit eM Client’s capabilities.

For example


For complete list of restrictions contact our support department at