[thiccly]

Sounds good... in theory. Truth is we don't know this, their mail client is proprietary and even if it was open source we still wouldn't know what their servers are logging. I am in a similar situation and I trust Google more than ProtonMail with all that Tesonet data weirdness pointing back to one guy. These shell companies can go and disappear overnight, something to consider.

[wildduck]

Protonmail's email encrypted in the browser! Their client is open source:

https://github.com/ProtonMail/WebClient

It is main reason to use ProtonMail over Gmail.