XMPP account
When registering on Outmo.de you automatically get an XMPP (aka Jabber) account on the same user ID.
So if your Fediverse ID is mrfancypants@outmo.de you can also be reached via the XMPP federation on the same JID.
Learn more about XMPP on Joinjabber.org.
Apps
We currently recommend the following mobile apps for XMPP:
On desktop PCs use either Gajim or Dino.
Upcoming features
There is still some work to do to enable video calls on our Ejabberd XMPP server. Hopefully we will be able to enable it by the time Monal has full support for it as well.
We will also support using XMPP as a UnifiedPush distributor.
We will also try to integrate a XMPP web-client into out Akkoma frontend.
There is also a plan to enable some Slidge gateways to other chat services like Telegram or Signal.