MessageProvider for third-party apps

Checklist

• I have used the search function to see if someone else has already submitted the same feature request.
• I will describe the problem with as much detail as possible.
• This issue only contains a request for one single feature, not multiple (related) features.

App version

5.912

Problem you are trying to solve

After removing BroacastReceiver, the whole third-party integration is gone with the mentioned release.
My app (an android launcher) used these methods to get notified whenever a mail arrived or deleted.

Suggested solution

I do understand the concern to let the user know if an app requested these permissions.
Don't know if there's an option to create custom runtime permission, but would be welcome.
Especially as I have found some roms (mainly android 11 and 12) where the system simply ignores these permmissions stated in the manifest and had to be granted through adb.

Screenshots / Drawings / Technical details

No response

Begin by tracing the removed BroadcastReceiver and the third-party notification integration described in the issue, then review how Android 11 and 12 handle the relevant manifest permissions. Done would require an agreed replacement API or permission model with defined behavior for mail-arrival and deletion notifications.