Bulk Messaging
Every text messaging initiative geared to drive sales typically would begin with a Bulk messaging activity. You may need to address a group of people within a geographic region or community and send a bulk message to all or a few of them from the list.
The messages can be text (SMS) or Multimedia (MMS) based and follow the same mechanisms to set up and send as a single SMS.
Bulk Messaging can be done manually as well as in an automated way. See the use-case for Automated Campaign Setup for automated bulk messaging.
Bulk messages from a List
You can send bulk messages from the List View of Salesforce for Contacts or Leads.
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Similarly, you can send bulk messages from Campaign Manager, Salesforce Campaign, and Reports.
For more information about sending bulk messages, see Send Bulk SMS.