Ok, understood. So if you’re not online, you pretty much lose messages, or are they cached and the next time the sender is online you get them?

My use case is a kid using a minecraft server and wants to talk to his friends, and we’re using mumble now, but they want “discord” and they want things like plugins that allow mgmt from the discord channels, which I would be willing to try to develop, but the model pretty much requires a server to be online.

In general, I’m trying to make a small internet for my kids and their friends to have “normal” internet experiences without being on the wider internet. No youtube, but pinchflat -> jellyfin. No discord, but mumble. No google drive, but nextcloud.

I have been exploring self-hosted Discord alternatives and had been looking at Rocket Chat, so I am wondering what is the pitch for this versus something like that? I am very early in my exploration, of course.