Comment by bigstrat2003

I haven't used fastmail, but proton works well for me. It's mildly annoying to have to run a local IMAP proxy to use a proper email client for my mail, but it's not a dealbreaker. And with the US having had over a decade track record of violating everyone's digital privacy, I enjoy the fact that proton isn't a US company and is therefore less susceptible to that pressure.