Not exactly the same problem, but similar.
Can't send => no connection to mail server, can't receive => certificate not secure (or similar).
We did not remove the app, but only the account. Create the account new and all went well.
Hints: Samsung Android 8.0/9.0, Samsung Mail App (stock), Exchange Active Sync Account.
Reason: probably Android or Samsung ...
This can be marked a duplicate of questions like this, but it's a device-specific question. It cannot be answered in a generic way, it should be “How to root XYZ Android device without unlocking bootloader?”
Simple answer is: It should not be possible to root Android devices without unlocking bootloader, but it's possible for some devices due to security ...
The meaning of "freezing" an application is to suspend it (temporarily) when running, and "unfreezing" allows it to continue running (from where it was frozen).
It is not the same as removing the "execute" flag (authorization) from an application.
When an application looses its "execute" flag, it disappears from the menus, but I don't know whether this ...
Lucky Patcher does that, but you will have to unhide it to use it yourself.
Home site: www.luckypatchers.com
Be careful when downloading LP :^)
PS: can be used without being root nor the machine rooted (as I do).
Permissions change with practically with every Android version , so without specifying the Android version, it is difficult to answer. Notwithstanding that, for a primer on permissions and to see how how crazy, it actually is, see The Android authorization model: a perfidious construct
Sourced from Izzy's blog (thanks)
*Permissions do not define what all ...