Group SMS Free - Send Text to group of contacts 1.1
You need to send Text messages to groups of contacts?
this is the app for you.
Use the iPhone address book groups, create, manage them adding contacts.
They will also be in sync on all your devices if you have enabled address book synchronization.
If you want you can also create permanent distribution list, so that the contacts will remain even if you remove them from your address book, also, you can enter names by hand...