This document provides guidance on developing an effective mobile messaging strategy. It discusses best practices for determining how often to send push notifications, timing messages, messaging all app users through in-app message centers, directing audiences with messages, using different channels like push, in-app, and email, creating engaging message centers, enticing customers to return to apps, getting started with beacon technology, using beacons and location data to improve in-store experiences, and making messages more effective with location history. The document emphasizes focusing on utility and the customer experience over sales and promotions.