How do I do this?
Plenty of apps nowadays have some "Open mail app" button (e.g. banking/finance apps who send a link to your email to login without a password) ... if I tap that button it shows Gmail and Samsung's Mail app to choose from, but AquaMail is not in the list.
If I adb-remove Gmail and Samsung's mail, and tap the button again, it does nothing as it can't see AquaMail as registered email app.
Clearly Gmail and Samsung's Mail apps are registered to handle mail. How can I register Aqua Mail as well?