[fzfaa]

You can only use a desktop app if you pay for protonmail. I suppose almost all protonmail users are free users and therefore they can only use the website.

[wsername_with_w]

I pay for Protonmail and use the web client on desktop.

I hope that many other are paying users too, because there are no ads. And without paying clients, how can a service like Protonmail survive?