Customer.io ARR Hits $100M
Oct 23, 2025
Customer.io, a customer engagement and messaging automation platform founded in 2012, has officially exceeded $100 million in annual recurring revenue (ARR)—a milestone confirmed in the company’s recent CEO announcement.
The company powers over 8,000 customers globally, delivering more than 64 billion messages in the past 12 months across email, push, SMS, in-app messaging and webhooks.
The platform addresses the challenge of fragmented customer data and legacy tools by enabling technical marketers and product teams to build behavior-based campaigns and cross-channel messaging flows with ease.
By unifying first-party data, enabling real-time segmentation and facilitating multi-channel automations, Customer.io helps companies convert trial users into advocates, retain at-risk customers and grow engagement without turning every change into an engineering project.
From a financial and operational perspective, Customer.io has grown capital-efficiently: the company was projected to hit around $78 M ARR at the end of 2024, at ~35% year-over-year growth.
With the $100M ARR threshold now crossed, the company indicates it will expand its infrastructure and partnership ecosystem, invest further in AI-driven personalization and maintain its distributed workforce while scaling reliably.