Open SMS Gateway that enables you to send promotional or transactional SMS to the recipients who have purposely opted in for receiving SMSes from you for offers, discounts, important notification, etc.

The interested customers will just have to subscribe to your SMS service by acknowledging their interest by sending a SMS with a predefined format. At the end you will get a list of subscribers who have opted in for your SMS and then you are ready to go with promoting your products or updating your customers with intended transactions even on DND numbers too.

The best and most cost-effective way to reach to the audience as the market catered by you would be one who are interested in your services rather than just promoting your product to random public.