The purpose of creating a keyword is to build a list of customers’ cellphone numbers. A list of cellphone numbers is created automatically when a customer texts the keyword to the phone number 555888 (Simple Texting’s “short code”). The customer is said to be “opting in” or “subscribing” to the list. For example, a marketer might invite subscribers to a list by adding the following to displays in the client’s location, to traditional advertisements, and more:
Text Pizza to 555888 for great deals from Lou’s Pizza!
The customer texts “Pizza” to 555888 and they’re on the list.