Welcome to Customer.io

Quick start guide

Academy: structured learning

1. Create your workspace

2. Set up message channels

3. Integrate with Customer.io

4. Add profiles

5. Send events and make segments

6. Start sending automations and workflows

Use Customer.io with AI

Your Customer.io agent

Customer.io CLI

Customer.io MCP

Email content analysis

In-app message suggestions

In-app survey analysis

Use our docs with AI

Introduction to messaging

Profiles & events

Objects & non-people data

Message channels

Liquid & personalization

Integration directory

Quick start guide Understanding integrations in Customer.io Troubleshooting Data compliance and privacy

Introduction Source specs Custom events Semantic events Backfill historical data Proxying requests to Customer.io Connections

Getting started Add a data-out integration Actions Action triggers: code mode Database/warehouse integrations Filtering and mapping actions Resend past data Connections

Pipelines API Track API App API Reporting Webhooks Comparing the Pipelines and Track APIs

iOS Android React Native Expo Flutter

Settings & Billing

Account verification

Tasks: workspace performance

Privacy & security

Troubleshooting

✨ Latest features

Design Studio: new and improved canvas editing experience Aug 14, 2026

Edit your components more intuitively with slash commands to add blocks, shortcuts to navigate and resize elements, and the ability to click and drag…

Control how fast your automations send messages Aug 6, 2026

You can now add a rate limit per channel for each of your automations and API-triggered broadcasts. You might add a rate limit to protect your email s…

Set up SMS with Sinch, Infobip, or Vonage Jul 30, 2026

You can now bring your own provider for SMS messages! Previously, you could only integrate with Twilio or work with Customer.io to set up sending with…

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Release notes › Resolve duplicate people using the API

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← Release Notes

Resolve duplicate people using the API

September 24, 2021 Api / Developers Data / Integrations

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