Please don't call ProtonMail "end-to-end encrypted email". They are mailing links to content hosted on their own servers.
The worst part is that they could easily allow interop and implement proper features in the client. Too bad they don't care and the competitor(s) (is there anyone else than Tutanota with a full e2e impl?) don't care about the users either.
I worked for a competitor a while ago, was ruined by a relatively incompetent CEO. The team is still fiddling with various small projects related to the field, but creating a proper solution without funding is quite hard, as it's a very extensive, challenging project.
The worst part is that they could easily allow interop and implement proper features in the client. Too bad they don't care and the competitor(s) (is there anyone else than Tutanota with a full e2e impl?) don't care about the users either.
I worked for a competitor a while ago, was ruined by a relatively incompetent CEO. The team is still fiddling with various small projects related to the field, but creating a proper solution without funding is quite hard, as it's a very extensive, challenging project.