I’ve thinking about ditching my Protonmail email address with Posteo since I need IMAP support (because I hate using the Protonmail app) and honestly paying for Proton Mail Plus didn’t worth the money because they are pushing me to buy the Protonmail Unlimited but I don’t need all those capabilities nor would I use them and the best alternative I’ve found is Posteo and honestly I like it, I even got CalDAV support which I didn’t have in Protonmail, but personally I don’t know anybody who use Posteo, so I post this here.
Posteo is nice, my main email is with them for years now :) I only wish they would add some features from time to time, but otherwise it’s really stable!
I’m actually happy that they don’t follow the feature bloat trend.