Well, some (read: United Internet aka GMX, Web.de, 1&1…) providers offer a XMPP-based IM solution[0], but I have to admit that I never used it so far, preferrin

Well, some (read: United Internet aka GMX, Web.de, 1&1…) providers offer a XMPP-based IM solution[0], but I have to admit that I never used it so far, preferring to host my own ejabberds. [0] https://en.wikipedia.org/wiki/GMX_Multi_Messenger https://en.wikipedia.org/wiki/GMX_Multi_Messenger