Customer.io: AI-Powered Customer Engagement Platform

The customer engagement platform trusted by 9,000+ brands

The customer engagement platform trusted by 9,000+ brands

Unify your data, messaging, and AI in one platform, so every customer interaction becomes a signal you can act on to lift conversion, retention, and revenue

Intelligence that compounds
Optimize each message with insights from every result. Small gains compound over time.
Orchestration that scales
One platform for every channel, message type, industry, and geography.
Built for agents, not just humans
Works with any AI tool using MCP, CLI, API or webhooks.

Capabilities

Everything you need to
engage customers

Platform overview

Journeys

Build automated campaigns that improve with every send.

Audiences

Reach the right people using data-driven segmentation.

Data & integrations

Use your customer data to drive better personalization.

Man using his desktop computer to write code

Design Studio

Create beautiful messages at scale without complexity.

Group of coworkers looking down at a computer screen

Analytics

Surface insights that help you optimize for business performance.

AI Agent

Meet your AI Agent

Tell it what you want, and it gets to work so your team spends less time configuring and more time on what matters most.

Meet your Agent

Solutions

Support every stage of the
customer journey

Enterprise ready

Infrastructure built for teams and the
agents that support them

Integrations

Integrates with the tools you use most

Connect your data, apps, and AI tools to a single platform that scales with your business.

Abstract illustration connecting data to secure grid

Security

Security you can trust

Protect customer data with enterprise-grade safeguards for both your team and AI agents.

Support

Support you can count on

Email and chat support are available, with hands-on implementation and ongoing guidance when you need it.

Case studies

Trusted to power billions of
customer interactions

All case studies

28%

Increase in click-through rates

22%

Increase in email conversion rates

“

Customer.io has become the heartbeat of our lifecycle marketing strategy, empowering us to communicate with users in a way that feels genuinely relevant and personal.