[stansult]

I read all (I think) threads on this topic, but they all say you have to switch notifications ringtone to “Silent”.
I’m using the standard email app since I have to use non-Gmail account for work.
In my case, I can’t do that, the option is always disabled for me:

[stansult]

Ok, I solved the problem.
Turned out, I somehow had driving mode on. Once I turned it off, notifications became silent.

Weird is still the fact that “Select ringtone” still shows “Postman” and is disabled.