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.