In my opinion, and as a customer of Fastmail, I think this is the right call. xmpp as a usable federated chat protocol is pretty much dead. For those who wish

In my opinion, and as a customer of Fastmail, I think this is the right call. xmpp as a usable federated chat protocol is pretty much dead. For those who wish to keep using it, setting up your own server (prosody is pretty good!) isn't too hard these days.