[guitarbill]

I'm not sure if email can ever be secure, or put better if I could ever set it up and keep it secure. So the jurisdiction issue wasn't a big factor for me (although I'd prefer Switzerland over Oz's warrants with gag orders).

At the time when I evaluated, FastMail just worked, and their standard support remains excellent. IMAP works great. The ProtonMail bridge thing put me off to be honest. There's not too much else to it.

Either way though, both were preferable to Gmail, which I wanted to drop along with all Google stuff if I could. And being lazy/just wanting it to work, I chose Fastmail.

[throwawaysea]

I think I’m trying to decide on the tradeoff between ProtonMail for privacy reasons and FastMail for good support. It’s not clear to me what implications there are for the bridge thing or their location.

[guitarbill]

The privacy stuff has been discussed to death elsewhere. All I can say is compare the setup instructions for either service on desktop and mobile (especially if you're on iOS). Maybe calendar and contacts sync too, if you care about that. If you can live with the ProtonMail way of doing things, go with them, else FastMail.