Proton is vibe coding some of its apps.

@sunzu2 it feels janky as hell, it’s missing advanced features (someone in the other thread asked about Sieve filters), and it doesn’t support non-Tuta clients. their development cycle is so slow I can’t count on any of these features cropping up anytime soon.

with those criticisms in mind, Tuta’s still approximately the only credible choice remaining for threat models where end-to-end encryption is important. we desperately need better fully open source options for this.

Not an issue, per se. In order to keep the team small they built most the app in a single codebase. It's mostly web code, and the apps are wrappers for it. So it keeps it unified between all clients but it definitely feels like a web wrapper, so it can feel a bit slow or clunky.

I have tried Tuta out, it's fine from my very limited use, but kinda locked in in ways I don't really care to pay for. Last time I saw it brought up some other folks were recommending mailbox.org. I don't know about it too much, but might be worth looking into as well.