I've been using Tuta for more than 8 years now and had one serious issue with their service during this time (longer outage, pretty early on). Other than that I have nothing but positive experience with them.
They're also based in Germany if that makes any difference.

[–] leobm@piefed.social 2 points 8 hours ago* (last edited 8 hours ago)

I’m happy Posteo.net user.
German and secure email service.
But unfortunately the web frontend isn't quite as good, so if you are dependent on something like this then don't use it.

[–] zugzwang@lemmy.dbzer0.com 3 points 9 hours ago (2 children)

I was debating between proton and tuta, but I was able to get first.last@tuta so I’m happy that worked out now.

[–] CarbonBasedNPU@lemm.ee 1 points 3 hours ago* (last edited 3 hours ago)

I have last@tuta.com and its a 3 letter last name, very cool.

[–] Essence_of_Meh@lemmy.world 1 points 9 hours ago

We can only hope they won't screw up as well in the future.