[tawhk]

I have a story with FairEmail. As I'm always looking for 'libre' (or at least open source) alternatives to the apps I use, one day I came across FairEmail. I saw that it had an app in the Playstore and in F-droid... I did a little research in their repository and then I decided to try the F-droid version. I had to enable Google's option for "unsafe" apps to allow me to use my Gmail. About a week later I get the alert of an attempted login with my Google password. I decided, after changing my password, to uninstall Fairmail (it was the only place I put my password so it could have been leaked). But I was always left with the doubt that Google might have possibly spoofed that login attempt so that I would just go back to using the official Gmail app.

[easyKL]

That's the way Alphabet has to force you to use the official app. It also happens with Gmail accounts on Thunderbird. They claim is just because the need of OAuth support for third party email apps.