macbook air m1 mail notifications are not working

No it is not a known issue. You have two different apps related to email accounts without providing any notifications. I am assuming that you are receiving emails normally and are even seeing a badge count number on the app icons. You may not be getting any sound or banners. If this is the case then-

Open System Preferences ➔ Notifications ➔ Mail (Left Pane) : Here ensure that all the settings are set correctly as shown below.

Open System Preferences ➔ Notifications ➔ Outlook (Left Pane): Here ensure that all the settings are set correctly as shown below:

Axel F.

Hello Gary,

Good Luck at the Apple Store. Please keep us posted. Thanks.

Axel F.

Interesting. Thanks for the information. Appreciate it.

Axel F.

Try toggling the "Do Not Disturb". It worked for me!

Same here, but after I toggled it on and off it work.