Repro is a platform designed for customer engagement that utilizes customer data to facilitate meaningful communication through various channels, including email, push notifications, and web and in-app pop-ups. In today's landscape, data is often dispersed between physical and digital environments. Many communication strategies simply send out generic emails and notifications. However, Repro integrates diverse data sources to transform one-time buyers into loyal customers by delivering optimal messages tailored to their specific journeys across different platforms. This includes personalized communications through push notifications, in-app messages, and the app's user interface. For website visitors, it provides the opportunity to showcase banners at the most effective moments based on customer attributes and behaviors, promoting campaign details while also reminding users about abandoned carts. Moreover, the insights gained from website interactions can enhance email marketing efforts. Our research focused on the actual usage patterns of companies that have adopted these app and web service tools. By understanding these patterns, businesses can refine their engagement strategies for even greater effectiveness.