Take a look at the stats of your mailing list. Even with a list of engaged readers, you’ll be lucky to hit a 30% open rate. SMS marketing, on the other hand, has an open rate of 90% within 3 minutes of sending the message. Most consumers have their mobile phone on them at all times, and receive notifications whenever a text message is delivered. Plus, SMS is a somewhat uncommon promotional method, so user’s inboxes aren’t flooded with promotional material. For the time being, SMS marketing is the most effective digital marketing technique you can employ.