SMS messaging follows the rules of permission based marketing. It’s 100 percent opt-in based. Simply put, customers have to give their expressed consent before receiving SMS messages. This can be done in one of three ways. New subscribers can double opt-in¹ via web widget, add their cell number to a compliant sign-up form or text to join. The latter is the most common. After opting in, the new subscriber will receive an auto reply confirming their subscription. If the opt-in was accidental, they can simply reply STOP, and all messaging will cease.
Sending text messages to phone numbers of owners who have not opted-in to your SMS campaign is an illegal practice. It is a violation of federal law under the TCPA, and it can result in costly lawsuits. Consumers can sue you for sending them unsolicited messages, and they can claim between $500 and $1,500 for every unwanted text message that you have send to them.
There is no other method that comes close to SMS in terms of reach and reliability. And that goes for their open rates as well. Clients can easily skip over a social media or mobile app push notification that appears briefly on the screen and then disappears. Emails are rarely even opened and when they are, it may be long after the event or promotion you were advertising took place.
This question exists for many. First, NEVER EVER purchase a list of mobile numbers. (SMS/MMS) marketing is permission based, and ultimately you want a list of customers numbers who are genuinely interested in your product or service and are happy to receive your text message and are likely to buy your goods and service. Remember, you can turn customers off and possibly upset a lot of your potential customers when sending text messages on their mobile devices without their consent.