Choosing to use mobile marketing for your med spa is a very popular and effective way to keep in touch with clients and to advertise new specials. The most important thing to remember is that everyone must opt-in to receive your messages. The best, and easiest, way to do this is by having each person text the keyword to the shortcode. The shortcode is the shortened phone number, we use 77948. The keyword is the word you choose when you sign up. This could be the name of your spa or a type of service you offer, any word that is easy to spell and something that they will relate to your business.