Microsoft is ending support for Windows 11’s built-in Mail and Calendar apps after December 31, 2024, and users will need to switch to the web-based Outlook app Users can still access emails and calendar events in view-only mode in the Mail and Calendar apps, but won’t be able to send or receive emails

Microsoft is notifying its Mail and Calendar app users to switch to free web-based Outlook. Many users have reported noticing pop-ups from the app. Microsoft insists users make the migration by December 31, 2024. After that date, the app will only display emails and calendar entries saved until the scheduled date.

Microsoft is planning to no longer support the Windows Mail, Calendar, and People apps later this year. The software giant has been moving existing users of these apps over to the new Outlook for Windows app in recent months,

If you're still using either of these apps, you'll need to switch to the new Outlook or find alternatives soon.