In this third week of testing, I have no complains about the Mail, but I am still unhappy with the Calendar; the Agenda view on mobile is useless, as it shows only the current day, just like the Day view; it makes no sense; other negative point is the Week view - only 7 hours of the day are shown on mobile; this means that I have to keep scrolling up and down to see all appointments; why not a pinch-to-zoom feature as in Google Calendar and Proton Calendar? Weekly view on desktop is even worse.

This week, I am also comparing Tuta Mail & Calendar to Proton Mail & Calendar; Proton wins by far in usability and speed; I do not like that they are 2 separate apps, but I could live with it. Tuta wins on pricing and features (as 3 custom domains) on the entry tier.