Comment by jug

Yes, I looked around now for a provider supporting custom domains so I don't need to change address just because I change provider and came up with a few popular ones: Fastmail, Protonmail, Runbox. Note that Protonmail is "special" about their IMAP/POP3 support, only supporting select clients and then via a particular helper application.

It's not only this issue with Google being like a wall when things happen, but also that I dislike their semi-AI based interface. While I like their good spam filter, there's a lot of other stuff going on there, and that without any inbox rules that I have set up.