I’m pretty happy with them. Pricing is fair and their mission seems trustworthy. They have a decent cli client that I use to automate my backups with.

I played years ago but lost interest after I reached BR 100 on my NC char

Well, it’s not like email is a particularly private protocol to begin with. Proton has PGP encryption under the hood for proton to proton communication. But proton to whatever is not more private than using your hosters mail service.