Teams notifications can now be handled by Windows and macOS, and you can get better privacy by disabling message preview in the notifications, including on Teams mobile clients. The privacy updates are available now and support for the native OS notifications in both Windows and macOS should be available in mid-November.
FYI: In an update posted on January 7, Microsoft says that native Windows notifications for Teams will now start rolling out in mid-January with deployment to complete in mid-February.
