What channels can I include in an automation?

Automations supports email, SMS, push notifications, in-app messages, WhatsApp, LINE, webhooks, and Slack. Orchestrate every touchpoint from a single workflow so customers receive the right message at the right time.

How does AI improve my customer journeys?

Customer.io brings AI directly into your workflows. Use LLM actions to generate data, personalize messages, and make real-time decisions, while your AI Agent helps you build automations, answer questions, and complete tasks across your workspace.

What data can I use to personalize automations?

You can build automations using customer profiles, events, account relationships, and other real-time data. Every workflow can respond to what customers are doing now, making every message more relevant and timely.

Can I build customer journeys without engineering support?

Yes. Customer.io's visual workflow builder makes it easy for marketers to create, test, and launch sophisticated customer journeys without writing code. When you need more flexibility, developers can extend workflows using APIs, webhooks, MCP, CLI, and custom integrations.

Journeys

Marketing automation that drives engagement

Turn real-time data into journeys that adapt to every customer across email, push, in-app, SMS, WhatsApp, and beyond.

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The customer engagement platform trusted by 9,000+ brands

Our difference

Our visual workflow builder and AI Agent work with you, so journeys that took hours now take minutes

Automated journeys

Create targeted cross-channel automations.

Data activation

Access your data without limits.

Intelligent timing

Reach customers at the moments that matter.

AI-powered execution

Build, personalize, and automate with AI.

“

Because we have every event flowing into Customer.io, we were able to build a journey that adapts to what each user is actually doing—or not doing.

Sue Cho

Head of Lifecycle Marketing / Monarch

Send capacity increase

25x

Georgia Aquarium

Conversion rate boost

7%

Notion

Lift in monthly revenue

2.5%

Lugg

Onboarding activation increase

10%

vibe.co

Everything you need
to build smarter customer engagement

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Key features

Everything you need to build
better automations

Visual Workflow Builder

Build and run intelligent workflows

Launch a complete lifecycle journey in minutes from one prompt.

Visually design customer automations
Collaborate across teams with shared workflows
Trigger messages based on real-time events

AI-powered

Your automations now have a brain

Use LLM actions, your Agent, and MCP and CLI integrations to build, run, and optimize journeys with real customer data.

Prompt AI-decisioning mid-journey
Let AI build complex automations for you
Run a connected AI stack with MCP and CLI

Omnichannel support

Marketing and transactional messages in one tool

Build unique customer interactions across the touchpoints that work best for your business.

Automate journeys that improve customer experience
Send one-time messages to the right audience
Deliver consistent transactional messages across channels

Additional features

Multi-channel automations
Email, push, in-app, SMS, WhatsApp, Slack, and webhooks.
Broadcasts
Schedule one-time sends or API-triggered broadcasts.
Transactional messages
Trigger password resets, order receipts, and more.
Subscription center
Let your audience decide what messages they receive.
Automation triggers
Segment, event, form, relationship, date, webhook.
A/B testing
Optimize messages and monitor performance.
Mobile SDKs
Native iOS + Android, React Native, Flutter, Expo.
Conversion goals
Measure performance based on user actions.
LLM actions
Run any prompt directly inside an automation.
Branching logic
Send each customer down a unique path with flexible logic.
Data activation
Power journeys with customer, event, and account data.
Analytics + metrics
Gain insight into audience behavior to improve success.

2.5%

monthly revenue lift

12-15%

consistent conversion rate

“

I saw a huge opportunity to breathe new life into our lifecycle marketing by modernizing campaigns and leveraging Customer.io's advanced segmentation and automation capabilities.