Most of (my) email communication is insecure anyway. I was looking for a Proton replacement after the sh*t show that happened with Yen, plus I don’t want to rely on the bridge to use Thunderbird.
Tutanota is not an option, years ago when they were suffering DDOS attack almost daily communication was poor, email import is still reserved to the most expensive tier for some reason… and when they increased the prices 3 times, or when they took out the calendar invites from the subscriptions…
Mailbox.org recycles addresses and seems there are issues with people being able to send mail from any mailbox address (might have been fixed?) - Remove Mailbox.org - #116 by Sorge
Posteo (they also recycle addresses after 6 years!) doesn’t allow customs domains, but might be circumvented by using anonaddy/simplelogin (albeit SL hasn’t updated their mobile apps in two years…)
Fastmail is Australian, so five eyes, subjected to cloudact and their EU data center doesn’t change that.
Migadu seems to have a bit too much downtime for me
Runbox seems like an ok alternative, open standards, support replied in under 30 minutes (weekend night!). I’m not yet sure how secure it is, as my understanding is that email that fail DMARC won’t get rejected (PM doesn’t reject them either), but won’t necessary go to spam or get flagged either, also they don’t support hardware keys
tb.pro is expensive for what it is, plus I can’t get a month just to test it
All in all, I didn’t find anything that fully satisfied me, but I will be moving my aliases from SL’s domain to my own and then transfer to anonaddy as the dev is updating very often. Regarding the email provider, I will slowly move to runbox or posteo and keep my domain on anonaddy.