This is going to be a feature of StuffPlug 3 I'm quite sure (not 100% confident on that one). Stuff plug used to be a plug-in for Plus! but now TB has decided to make it link into messenger itself without any need for other applications. Watch
the StuffPlug website for more details, I would hope that we wouldn't have too much longer to wait for it. The reason behind the wait is that TB is waiting on a new server.