Businesses have been collecting customer information for years by offering a birthday freebie, i.e. a free product or service on your birthday. Customers are more likely to trust you with their phone number if they get some sort of reward in return. You can also send them one-month, six-month, or one-year “anniversary” bonuses based on their sign-up date.
In order to gain their mobile number, they will have to have a great deal of trust in you and a pre-existing relationship will help. They also need to know that what you'll be sending them via SMS message is exclusive offers, not the same offer that you give via email and social media. Be clear with your customers and use the following guidelines when introducing SMS marketing to your customers: