05-11-2013 02:13 PM
Welcome to BlackBerry Support Forums
Please Check those Knowledge Base , I hope it will help :
KB02189 : How to add / attach / integrate / email addresses with a BlackBerry smartphone on the BlackBerry Internet Service
KB12559 : How to Install and Set Up BlackBerry Messenger for BlackBerry Smartphone.
Please note for those propitiatory BlackBerry Application you must have an Active BlackBerry Data Plan from your Carrier or Mobile Network Provider .