Originally Posted by y.bb
No such program exists. This is a common complaint for those who want iPhone-like (or even Windows Mobile-like) threading.
My solution was to tell my friends to get BlackBerries so that I could talk to them using BlackBerry Messenger, which provides true message threading as well as delivery and read receipts.
you may want to check again there were several in beta here a while back I am sure thyve been released by now