Version 2.3 of the SMS Mac Address Book plug-in is available.

We improved the Group SMS feature of the plug-in:

The SMS Mac Address Book plug-in now gives you more feedback
about which mobile numbers in the group were actually not sent
(because of mistakes in the mobile numbers). Also, SMS Mac will always
immediately submit the Group SMS to the gateways and report the
invalid numbers afterwards.

We also improved the error message in the case where an invalid
email address has been entered in the Reports preference pane.

You can download SMS Mac 2.3 here:

http://www.smsmac.com/download/SMSMac23.dmg

Requirements: Mac OS X 10.3 and up (including Leopard).