CleverTap

CleverTap is built for app developers and mobile-first teams that need to send coordinated messages across multiple channels. It handles push notifications, email, SMS, and in-app messaging in one system, with the goal of keeping customer engagement coherent across all touchpoints. The platform includes audience segmentation and lifecycle automation tools that let teams send triggered messages based on app behavior.

The platform works especially well for mobile app developers managing user retention and engagement. It's designed to handle the technical requirements of app messaging, including deep links and in-app experiences, alongside traditional email and SMS channels.