Minimize disruption Most users should only need to complete a Microsoft sign-in after updating. We are designing the transition to require as little manual intervention as possible.
Preserve functionality We're actively implementing Microsoft Graph support and evaluating areas where Graph does not yet provide full replacements for existing EWS functionality.
Keep users informed We'll continue sharing development updates, beta availability, transition guidance, and important milestones as they become available.
01 Update to eM Client 11 When the release becomes available, install it over your existing copy. Your accounts and data are preserved.
02 Sign in with Microsoft A standard, secure Microsoft OAuth prompt re-authorizes your Microsoft 365 account on the new protocol.
03 Continue as usual Your existing data stays on your device. No manual account recreation is expected for most users.
What is Microsoft retiring? Microsoft is retiring Exchange Web Services (EWS) protocol for Microsoft 365 and Exchange Online. Third-party applications will need to use Microsoft Graph instead (or alternatively IMAP or POP protocol for emails only).
Does this affect all eM Client users? No. Only users with Microsoft 365 or Exchange Online accounts are affected. On-premises Exchange accounts, other Exchange server providers (such as SmarterMail), and accounts set up via IMAP or POP3 protocols will not be impacted.
Do I need to do anything today? No action is required right now. We're actively developing Microsoft Graph support for eM Client 11 and will share guidance well before the retirement dates.
Will I have to recreate my account? Most users will not need to recreate their accounts manually. The transition is expected to be mostly automatic, with a one-time Microsoft OAuth sign-in after updating to eM Client 11.
Will my emails be lost? No. Your existing account data remains on your device, and your mailbox lives on Microsoft's servers. The change is at the protocol layer only.
What features may change? Microsoft Graph does not yet provide full replacements for every EWS feature. Public folders, archives, distribution lists, and inbox watcher behavior may be limited by Microsoft's platform. We're working to preserve as much functionality as possible.
Does this affect on-premises Exchange Server? No. On-premises Exchange Server installations are not part of the EWS retirement. You can continue using EWS with your local Exchange server.
When will Microsoft Graph support be available? Microsoft Graph support is currently in development for eM Client 11. We'll share availability details and beta access through email updates as development progresses.