There are Federal Changes now requiring Registering Your Brand & Campaigns. If you do not do this, your SMS messages may get blocked.
Example Answer: “This campaign is used to text people that have expressed interest in our product or services.”
Describe how a person opts-in as well as how they would opt-out.
Example Answer: “Customers OPT-IN by (describe how they opt in) which is how they indicate they are acknowledging/consenting to receive text notifications. They may unsubscribe at anytime by replying STOP”