Hey there,
I’m on the search for an alternative to Mattermost for a small institution I’m working with. Mattermost was the strongest contender for our needs, yet they changed their policy regarding self-hosted instances. The factor that killed it for us, is the hard cap on 250 registered users, as we potentially might need to commodate more than that.
Rocket.Chat has similar caps.
We found Zulip, and it seems as it might be what we are looking for, but we haven’t tested yet. Nonetheless, I wanted to address this community, as you may have another good idea?
I was using conversations and from what I understood the server handles syncing of history from clients that have all the history so of one disappears your history disappears. That is what played out in my tests.
That must have been a severly misconfigured server then. Normally history is stored on the server and synced on demand via MAM.
Of course with modern e2ee you can’t actually decrypt old history on new devices, but that is an intentional feature with PFS.