Honestly fantastic. Hate being "that guy", but if a profit is at the end of the agenda, you can never really be sure if what a service provider promises is going to be there for good, or if they're already doing things behind your back for the profit motive.
Tuta is fine as an email provider, don't get me wrong, but I just recently swapped from them to Disroot considering I like the latter's non-profit nature. Just a matter of me becoming able to spare the funds every now and again to donate.