> There is no store-and-forward as such, the sending node will keep the message in its outbox and will keep retrying until the destination is online.

Yes I might be wrong but my understanding is there is no point in creating another system where messages hop from one peer to the other like Meshtastic or Reticulum (what make sense for their use case).

Let's say users have their "email server" running on both on there mobile phone and a home server and in sync. We can expect 2 of the 4 servers will be online at the same time to send the message. I personally like those odds, Internet is pretty reliable in our days.

I believe we have spent too long trying to solve very hard trilema in messaging, trying to have it all: confidentiality, anonymity and uncensorability ... and reliability ... and ease of use. The result is in practice most people use GMail, Outlook and Whatsapp.

Yggdrasil is fantastic, it goes back some original ideas of the Internet we have almost forgotten, and in practice solves a lot of problem we have been dealing with for too long.