Docs for you and your agents

Read the docs yourself, get answers using the Ask AI button, or point your AI client at them. Because Customer.io is AI-native, your AI client can then do the work for you: build segments, draft emails, or report on how your messages perform.

Customer.io is a platform for sending automated messages — email, push notifications, in-app and web messages, SMS, Slack, and webhooks — driven by the profile and event data you send it. These docs cover setting up a workspace, getting your data in, grouping people into segments, building automations, designing and sending messages, and reading the results. They also cover the REST APIs, mobile SDKs, and data pipeline integrations you use to connect Customer.io to the rest of your stack. If you're new, start with the quick start guide.