Group Message allows you to do the following
- Send an SMS to a group defined in your phone's contact database.
- Manage the rate at which the text messages are sent to the group. This means that the well-known android sms sending rate limit can be evaded with proper configuration.
- Requeue failed text messages.
- Issues can be raised on github https://github.com/vaneyck/GroupMessage
- Progress can be tracked here https://trello.com/b/ibzBTO1Q/group-message