But you can get secure email if you’re the sender (you can choose to encrypt) or it’s coming from someone else at Proton.
But yeah, there should be a secure alternative, perhaps an amendment to SMTP where only the “to” address is available. If I have the public key of the receiver (negotiation of that could be part of the protocol), I can encrypt everything else and my email could still be routed properly.
But you can get secure email if you’re the sender (you can choose to encrypt) or it’s coming from someone else at Proton.
But yeah, there should be a secure alternative, perhaps an amendment to SMTP where only the “to” address is available. If I have the public key of the receiver (negotiation of that could be part of the protocol), I can encrypt everything else and my email could still be routed properly.