1. Accurate but not really helpful here. p2p systems that need to achieve data consistency use a gossip protocol to spread the information around all the nodes in the network.

Gossip protocol - Wikipedia

2. and 3. Are basically the same. Yes, Mike's client implements a version of the outbox model but when people talk about the protocol they aren't normally referring to his client.

Thanks sharing🤙

I'm curious why this is implemented on the client side and not on relay. An unprofessional question: I think relay is better suited to the gossip model to spread information