During the past year, Delta Chat has been working on multi-transport chat messaging - you are no longer restricted to one server hosting your identity and transmitting your messages. Instead, the decentralized chatmail relay network transmits your messages, while your identity remains on your devices only, through the cryptographic key.

In this talk we go into the technical details of multi-transport. We show how we migrate the ecosystem to this new approach, and how it can be introduced without taking away the seamless messaging experience from users.

• Delta Chat website: https://delta.chat
• Chatmail relay documentation: https://chatmail.at/doc/relay/