@jaz Android 11 here. Android 11 gives you very fine control over notifications. The controls in the app's settings is just a start. Go to your Android Settings / Apps and choose the Mastodon app and Notifications. There you should see a detailed breakdown of all the kinds of notifications Mastodon might generate (like 10). Each of those can be set as you like: the kind of notification, whether it makes a dot, what the notification sound is, whether it obeys the Mute or breaks through, etc. At least that's how it is on my phone.