I just read #Tutanota's privacy policy, and honestly, I found it really well-written and understandable – well done!
tutanota.com/privacy-policy/

I read it because I got a notification from them asking me to enable first-party (!) analytics. As a developer myself (c.f. @pixelcodeapps), I understand how valuable analytics and stats can be, so I consented.

Maybe you could explain in more detail what you mean by those “certain user actions” that you want to know more about, @Tutanota?

Tutanota Privacy Statement

We are responsible for the protection of your personal data and your right to privacy. Therefore all user data is stored end-to-end encrypted in Tutanota, and we have technical and organizational measures in place which protect your data.

^Tutanota