Customer.io is the customer engagement platform that enables marketers to build their most sophisticated automated messaging campaigns. With access to your real-time behavioral data, create personalized and relevant messages that engage and retain your customers. Send emails, push notifications, in-app messages, SMS, and more all through an intuitive and powerful visual building experience. Built for scale, Customer.io is used by over 4,500 companies, sending over 8 billion messages per year.

Founded in 2012, Customer.io is a globally distributed, remote-first company.