Windows Mail and Calendar to stop working after December 31 : Microsoft

Microsoft announced that Windows Mail, Calendar, and People apps will no longer be supported after December 31.
“Support for Windows Mail, Calendar, and People will end on December 31, 2024,” the Microsoft Support website explains.
“We’re currently in the process of moving existing users to the new Outlook for Windows. After December 31, 2024, users will no longer be able to send and receive email using Windows Mail and Calendar. Any local emails, calendar events, and contacts stored in Mail, Calendar, and People will remain exportable,” it added.
For the past six months, Microsoft has been showing pop-ups in the Mail and Calendar apps, urging everyone to switch to the new web-based Outlook for Windows 11.