SMS coupons are a quick, personal and highly effective way to attract customers to your store or online site. Once someone is added to the list, you can easily send them occasional promotions right to their mobile phone. All you need is their mobile number in your database. You can also set it up to automatically send the promotions at set times. Like a week after buying a shirt, you can send a coupon code for a discount on pants or other clothing. SMS has a much more personal touch than email and you don't need a lot of content.