

I’m not entirely sure what you’re trying to say here. To clarify, telegram uses a store-forward architecture, meaning that it deletes messages from the server once they have been received by everyone. Until that time, the messages are stored on the server in plaintext, unless you’re using a secret chat. They do this to avoid having to exchange keys between different clients, but what that really means is that it isn’t actually private most of the time.



For the sake of accuracy: Incoming emails from external services are initially not encrypted. It’s only truly zero knowledge for either emails sent by another tuta user, or for emails that have already been received.
That being said, they don’t record this information unless specifically required by a court order, which to my knowledge has never happened. I understand that they make the decision of whether your account is spam within 48 hours, and after that it is in the clear. I created my account over Tor, didn’t use it much at all for the first few days, and have been using it fine since. That’s only one data point of course.