Once the apps reach end of support later this year, Microsoft warns that users who haven’t moved to the new Outlook app “will no longer be able to send and receive email using Windows Mail and Calendar.

Windows 11's Default apps section within Settings might be getting an overhaul soon. Here's how it could look.

Microsoft is replacing its classic Mail and Calendar apps with a new Outlook app in Windows, offering a streamlined and AI-enhanced experience.

It's time to ditch your Windows Mail, Calendar, and People apps if you use them. Microsoft is no longer supporting the Mail, Calendar, and People apps on Windows 11. Collectively, these apps offer functionalities found in the more streamlined,

Microsoft People is based on the old Windows 10 app and it will allow you to manage the contacts from Outlook. Here's more!

Microsoft will discontinue the built-in Mail and Calendar apps in Windows 11 after December 31, 2024, urging users to switch to the web-based Outlook app instead.

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