I'm all for options, to be honest. What ideally I'd like is some sort of good encrypted email based in some safe European country, which can achieve decent Android integration. Proton apps are pretty useless to that effect (lack of offline basic functionalities, the calendar app isn't even an android calendar provider). I'm not too hard in moving around my emails, since for the last few years I've been giving my email @duck.com which actually ends up sending to my final email after some tracking cleaning. Changing email provider would entail only updating my @duck.com destination.

Following up...Yeah, why not Startmail or Disroot? Startmail seems to offer more bang for the buck than Mailbox. I'm not sure how many aliases you get if you get a paid plan in disroot.

EDIT: I...misread. Startmail offers half-priced plan the first year, then goes ahead and doubles it, getting pricier than Proton, Mailbox and about everyone else I think.