Customer.io

Customer.io is a customer engagement platform that helps businesses send personalized messages based on customer behavior and profile data. Teams can build automated journeys across email, push notifications, in-app messaging, and SMS, segment their audiences, and measure campaign performance. Its tools support onboarding, activation, retention, and re-engagement throughout the customer lifecycle. Customer.io

RevenueCat sends purchase and subscription lifecycle events to Customer.io, including trial starts, conversions, renewals, cancellations, and expirations. The integration also passes revenue and customer attributes, providing subscription context for audience segmentation and personalized messaging.

Combine these signals with your app’s engagement data to welcome new subscribers, guide trial users toward paid subscriptions, follow up on billing issues, or reconnect with customers whose subscriptions have expired. RevenueCat supplies the subscription data; you configure the messaging journeys in Customer.io to respond at the moments that matter. RevenueCat