Swiss laws aren’t as tight as a lot of people think.
I’d like for them to lean more heavily into open source
It’s probably tight enough for your needs. Unless you live in Switzerland or are breaking Swiss law, they’d need a really good reason to send your data anywhere.
That said, I use Tuta. They have a similar source model (open client, closed server) and are based in Germany, but since they’re an underdog, they have a bit more value and lower costs. I pay €3 and get 3 custom domains and 15 aliases, whereas w/ Proton I pay $4 and get just 1 custom domain and 10 aliases; I can also add people to my plan for €3, instead of upgrading to a Duo for $15 or family for $24. If Proton matched Tuta’s features, I’d probably pay slightly more for the better UX, but I use those features so I’m very hesitant to give that up. I don’t intend to use their VPN or other products, so I’m very much not interested in their higher tiers.
I do wish their server code was open source and self-hostable. I’d love to use my own storage, but still use their spam filtering and whatnot.
It’s probably tight enough for your needs. Unless you live in Switzerland or are breaking Swiss law, they’d need a really good reason to send your data anywhere.
Unless you’re a climate activist in France:
“The email service says it was unable to appeal a Swiss court’s demand to log the IP address of a French climate advocate.”