SMS Marketing

More impact from every message

Turn customer data into personalized experiences across email, SMS, push, in-app, and more with a platform that gets more powerful over time.

Trusted by 8,000+ brands

Not interested in a demo? Sign up for a free trial

SMS Marketing

More impact from every message

Turn customer data into personalized experiences across email, SMS, push, in-app, and more with a platform that gets more powerful over time.

Trusted by 8,000+ brands

Not interested in a demo?

SMS Marketing

More impact from every message

Turn customer data into personalized experiences across email, SMS, push, in-app, and more with a platform that gets more powerful over time.

Trusted by 8,000+ brands

Not interested in a demo? Sign up for a free trial

We unify your data, messaging, and AI into a single platform, so every interaction with your customers is stronger and more relevant than the last.

Sharper audiences.

Surface high-intent segments and automatically uncover behavioral patterns in your first-party data.

Smarter journeys.

Build and optimize cross-channel workflows from a conversation, with logic the Agent configures for you.

Stronger content.

Draft, refine, and iterate on messaging while the Agent maintains your brand voice and guardrails.

how it works

Close the gap between intent
and execution

how it works

Close the gap between intent
and execution

how it works

Close the gap between intent
and execution

A new way to build

Turn one prompt into a full campaign

Watch the AI Agent generate a complete, personalized campaign from a single prompt. It already knows your workspace, your segments, and your data, and it carries that context forward every time you use it.

LLM Actions

Let intent drive the journey

See LLM actions make your journey smarter. Personalization, intent detection and lead scoring can happen mid-journey, with outputs that branch and personalize automatically—no manual logic required.

Global messaging

Your message, everywhere that matters

See how WhatsApp and LINE work as new channels, and what it looks like when your intelligence travels with your message, everywhere your customers actually are.

Full visibility

Connect campaigns to business impact

See how Goals lets you define the outcome you care about—a purchase, an activation, an upgrade. Connect every campaign that touches it, and track real people-based progress in one view.

customers love us

Preferred by product-led companies

Customer.io can do what other marketing automation tools can’t—take in millions of events from users per day, segment through them almost instantly, and use any campaign action imaginable to create workflows.

Hamish Elmslie

COO

We use all channels in our campaigns, when it makes sense to do so. Last month we sent over 11M emails, over 5M push notifications, almost 1M in-app messages, and almost 100,000 SMS messages from Customer.io.

Diego Schocher

Business Architect

We have been using Customer.io since 2015, and it is a flexible and powerful platform. We can create customized campaigns based on how often our users walk their dogs, which makes our messaging more effective for us and our sponsors.

Doug Hexter

CEO