When Should I Use Subscription Keywords?

Subscription keywords should be used when you want to send future SMS messages to a person.

For example, let's say you own a hat store. In the checkout line at your hat store, you have a sign that tells customers to text COOLHATS to 555555 in order to receive updates (via SMS) about upcoming deals on hats. When the customer texts in to the COOLHATS subscription keyword, they will receive a confirmation message letting them know that they are subscribed to the COOLHATS keyword. This confirmation message also contains instructions describing how the user can unsubscribe (per SMS sending guidelines) should they choose to do so. They will also receive a separate message (should you choose to define one). From here on out, you can send SMS messages to anyone subscribed to the COOLHATS keyword.