Customer.io
platform Portland, Oregon Founded 2012 201-500 employees
Customer.io is a Portland-based behavioral messaging platform founded in 2012, serving 7,400+ businesses. Event-driven email, SMS, push, and in-app messaging triggered by user actions.
About Customer.io
Customer.io (legally Peaberry Software Inc.) is a Portland, Oregon-based behavioral messaging platform founded in 2012. Unlike traditional email marketing tools that use list-based segmentation, Customer.io triggers messages based on real-time user behavior events sent via API or JavaScript snippet. The platform supports email, push notifications, SMS, in-app messages, and webhooks. As of March 2026, Customer.io serves more than 7,400 businesses, including companies such as Notion, Segment, and Codecademy.