Xmpp providers do not need to do anything.
How to delete chat messages from Xmpp server in android or ios?
It's open standard, allowing anyone to create a Xmpp compatible chat programs.
Once you have set it up, it will run like any other SIP/Xmpp/IM client.
Anyone can open their own instant messaging server,
register users on it and interact with other Xmpp servers.
It uses Xmpp, also known as“Jabber”,
which allows you to talk to users on any other public Xmpp server, transparently.
Juick is a web service that takes Xmpp messages
and creates a microblog using those messages as entries in the blog.
I am Using openfire 4.3.2 as my Xmpp chat server
and my issue is when I Suddenly Close the app and after a few seconds later when I am again open.