Customer.io is a customer engagement platform that unifies customer data with messaging and automation so marketing and lifecycle teams can send personalized campaigns across email, push notifications, SMS and in-app messages from one system. It is built for teams at growing companies that need behavior-based messaging rather than one-off broadcasts, and its customers include companies such as Notion and Attio.
Data from a business's other tools can be connected through an API, webhooks, or a command-line interface, giving Customer.io a unified view of each customer that campaigns and journeys can act on. Journeys use behavioral triggers and segmentation to automate multi-step campaigns, while an AI agent builder can turn a plain-language prompt into a configured automation complete with triggers, content and logic, and built-in analytics surface performance data and suggest optimizations.
Specific pricing tiers and amounts are not published on the page; the product is offered as a paid platform rather than a free tool, consistent with its positioning toward growing companies' marketing and lifecycle teams.
Listed 1 month ago by MakerVote editors · Updated September 2026 · 28 clicks
