The email comes into their server unencrypted. They promise that they will encrypt it for you, though. Of course, you’re also relying on the sending server to keep the message secure as well.
Proton Mail’s end-to-end encryption and zero-access encryption ensure only you can see your emails. Not even Proton can view the content of your emails and attachments.
The email comes into their server unencrypted. They promise that they will encrypt it for you, though. Of course, you’re also relying on the sending server to keep the message secure as well.