You can learn more about how Proton Mail encryption works here: https://proton.me/support/proton-mail-encryption-explained https://proton.me/support/proton-mail

You can learn more about how Proton Mail encryption works here: https://proton.me/support/proton-mail-encryption-explained https://proton.me/support/proton-mail-encryption-explained. There is a also a functionality that allows you to send password-protected emails to non-Proton Mail recipients: https://proton.me/support/open-password-protected-emails https://proton.me/support/open-password-protected-emails.