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Customer.io

Customer.io

Portland, Oregon, United States · Founded 2012

201-500 employees · $59M

Sourced & current · updated Jun 23, 2026Website

Customer.io is a customer engagement platform that empowers businesses to send targeted messages across email, SMS, push notifications, and in-app channels. It enables personalized communication and automated campaigns based on real-time customer behavior, helping companies build stronger relationships and drive growth.

Where they sit

Stack tier: Infrastructure & Data (B)

Marketing AutomationCustomer Engagement

Developer-friendly customer engagement platform with strong presence in SaaS and product-led growth companies

Pre-call brief from ATDb — sourced from the live database, current as of Jun 23, 2026. Not a static screenshot.