no e-mail, no phone number, no password, no ip...
Your messages are not stored anywhere, but only pass through the server. Peer 2 Peer. At the same time, they are exposed to transparent and reliable encryption using the Elliptical Curve Curve25519 directly in your browser. The Name and Status are also stored there (:not so thick yet, because incripto is still so young:)
But in the vast majority of cases, people are texting online, and there is no need to re-read the message.