3Jam is a multi-person sms startup which allows users to text message multiple contacts at once. The product allows all message recipients to see who got the message as well as to “reply to all”. Normal text messaging rates still apply, however, the service is available with all mobile networks (except T-mobile USA) and all service plans. 3Jam is set to embed its technology into new Virgin Mobile phones following a September 2007 deal. This deal marks the first time a multi-party texting product will have been launched by a US mobile operator.

The 3Jam service works on any phone through text message commands or through any internet enabled phone through a browser. The application also comes in the form of a download which will speed up the texting process. Palm, Nokia, RIM, Samsung and many other phone types are compatible with the download. To see the full list of compatible phones look here.