In September 2018, we updated our mobile app to send push notifications to users. We began using that technology to inform customers about our new products and best deals. Our notifications are smart. Often they are based on an individual customer’s order history and preferences. For example, the system can suggest a promotional offer that includes a particular product from the menu that the customer has ordered most frequently over the past two months. Within a month, push notifications have become a top direct communication channel in terms of sales, generating 55% of revenue.