how is the difference between secure-mail.biz - protonmail.ch? my question answered as follows: " Hello, Secure-mail.biz does not offer end to end encrypted messages. Your messages are encrypted when they get to their servers. They also have the key which allows them access to the information within your messages. ProtonMail offers end-to-end encryption, this allows us to have zero access to the data within your messages. You hold the only password that can unlock this data. Best regards, The ProtonMail Team " update: " They can read your messages at any point, we can not because we do not have the key - you do. Best regards, The ProtonMail Team " this true?