I have been protonmail for two years now, but when my current deal ends I plan to swap to tutanota, the main reason being protonmail currently does not have an android app that works without google play services, which means no notifications which has caused me real issues in life at critical times!
Tutanota has an appon f-droid (yay!), but will not be able to use it with thunderbird (booo) but it does have linux desktop app (yay!).
Anyone with experience/thoughts on tutanota?