A while ago I tried getting the latest version of Gajim (XMPP client) to run with OMEMO (encryption plugin) on Trisquel. I worked through lots and lots of compilation issues for dependency libraries of Gnome and other stuff that was new to me, but after trying for something like 3 or 4 days, I lost motivation. I also did not want to use the version number-wise much older version of Gajim to be able to use it. Perhaps that was silly of me.

I did run the older version to try Gajim out and to see how one connects to servers and which servers to use and whatever. That worked actually pretty well. I only had to find an OMEMO supporting server in at least superficially trustworthy hands. I really likes the instant feeling of sending messages and being able to log into 2 accounts on different servers and sending myself messages.

I'll have to try it again at some point. I would really like to know a reliable long term server, run by people with a privacy mindset though.