I say if the tray icon could show the number of unread messages would be awesome.
System notifications have been added in version 1.3.5. Go to Settings -> Preferences to set whethever you want to receive them for all emails or only for meetings/task reminders.
Linux/snap noteIf you're using Hiri snap package, you'll need to have at least version 2.30 of snapd. To check your version:
At this time version 2.30 is in candidate channel. To install it:
snap refresh core --candidate
We expect 2.30 to hit the stable channel in the next few days.
System notifications exist but the tray icon does not show if you have unread email, so the application must be opened to check that.
For exaple if you were away from the screen, then a notifiation will be shown but when it dissappears, you don't know if there is unread email.
You won't be notified about changes to this idea.