Ever wanted to send a message to many people at once? Now you can, introducing - Mass Messaging.
Firstly, this is only for WordPress (Network too!) running Buddypress. Check you have these installed correctly. Then, check you have activated the plugin.
The best way to get issues resolved is to head to the plugin page, and comment!
Yes, as of 1.1.4 you can change line 8 to read
define('MassMessagingGroupsOverrideShowOnlyPublic', 'false'); which will in turn show ALL groups not just those that are public.
Yes, as of 1.1.4 you can change line 9 to read
define('MassMessagingBlogsOverrideShowOnlyPublic', 'false'); which will in turn show ALL blogs not just those that are public.