You can manage the list of phone numbers in our Marketing tool and classify them based on location or demographic and send marketing SMSes based on your classifications. For e.g. you may have say 10,000 phone numbers of the potential customers who may be interested in your product A and another 50,000 phone numbers of the potential customers who may be interested in your product B. Now after typing the SMS text you can select the target users and with just one click you can send SMSes to either of the two groups or to both of them.