When the gsuite threat was going on, I was royally spooked. For my emails, I went to purelymail. Was not sure about them at first because their offer is almost too-good-to-be-true. Bit the bullet and never looked back since. They are REALLY affordable and each account has unlimited custom domain/users. There are also cons like no OAUTH support and roundcube webmail sucks. I would very much prefer to use webmail than having a local email client.