ProtonMail employee here: Are they encrypting incoming mail with recipient keys and throwing away the original? Yes we do. This mainly protects against servic

ProtonMail employee here: Are they encrypting incoming mail with recipient keys and throwing away the original? Yes we do. This mainly protects against service level requests for data in the future. Can I get similar security properties by periodically downloading my email and deleting it off the server (assuming the deletion is actually happening)? Yup, assuming you want to deal with that. ProtonMail is designed to give you a privacy focused option for email.