just use PGP to communicate. Proton like any other email provider is sharing data.
Proton might be even more dangerous:
making people careless, trusting their privacy to an entity, and might be a honeypot... No. 1 target for intelligences...
Discussion
Definitely a honeypot
At least Proton doesnt require mobile fone number, is accessible via Tor and Proton-Proton or PGP-Proton communiation is at least encrypted on the route.
However what most people dont understand is that actually only Emails between Proton accounts are E2E-encrypted but the Proton-PGP private keys are more or less stored on the Proton server (!). Communication with addresses outside Proton are by default NOT encrypted UNLESS PGP keys are exchanged.
Imho little benefits dont prevail the "security"/"privacy" issues.
Proton chats are never E2E-encrypted, Proton is just software and cloud servers. The main way you can tell they're a honeypot is actually how they gaslight users to believe you can ensure encryption is "end to end" with software and cloud servers
classic "don't trust, verify!"
Proton-Proton is E2E with backdoors like Whatsapp, thus worthless. 👍