Using Your Phone To SMS Your Contacts
Group messages can be sent from your registered handset using your on-line address book. This feature gives you the power to send messages from your handset to hundreds of recipients with one single, simple SMS message.
All Mobile Originated (MO) messages need to be sent to +61420300681 (only available from phones registered against an active account).
To send a MO message, compose an SMS on your phone in the following format:
GM [space] Alias [space] Message.
GM team Weekly meeting delayed, see noticeboard
In the above example GM indicates to the service that you are sending a Group Message. Team is the alias for a Group in the online address book and the message to be sent to all the members of this group is Weekly meeting delayed, see noticeboard