The messaging platform that puts your data to work

Reach people at the right time, every time.

Customer.io - Workflow

It has what you need.


Your messages will feel more personal when they’re perfectly timed and triggered with an advanced rules-engine.


Create groups of similar people using things you know about a person, or things they’ve done to better inform what you say to them.

User Profiles

Tap in to a stream of everything someone has done, and how they’ve interacted with the messages you’ve sent.


Measure your success with opens, clicks and most importantly: conversions.

Design & Personalization

Add your own HTML or use ours and use liquid templating to merge in data like {{customer.first_name}}.

Built for Scale

Over 900 customers send 100s of millions of messages every month on our enterprise-grade infrastructure.

Features galore, and more being added all the time

Send the right messages at the right time

Flexible Triggered Messaging

Use an event triggered email to send a payment receipt or other transactional email. Use a segment triggered email to onboard people in your app or win them back after a period of inactivity.

Deliver relevant newsletters

Send or schedule one-time emails to just the right people. No more asking developers to export a CSV just so to send out a targeted email.

Automate powerful actions

Trigger messages via push, SMS, and more — or behavioral data updates to other tools — all through our webhook actions.

Upgrade Annual Billing

Draft last edited on Fri, May 30 2014 at 1:19 pm

Who should receive this email?
in Not on Annual Billx
in Paid us 12 timesx
Add segment condition+
136 recipients

A/B Testing

Test your email's from address, subject line, content, and timing.

Send a Series

Send multiple messages from a single trigger. Stop sending when people stop matching.

Time Window

Choose to send messages only during business hours (or any other block of time).

Track Conversions

Connect every message to an action. Measure success.

Get your content out of code!

Messages managed in Customer.io let your marketing team update content and make changes live immediately.

Liquid Templating

With Liquid templating, you still have the power of code without having to re-deploy your site.

Custom Designs

Use our designed templates or bring your own. We'll help you make sure your emails look great!

Rich segmentation so you can focus on your message

Everything is kept up to date in real time.

Create segments from any data


We'll automatically log each pageview on your site.


Anything about the person, like first name, price plan, age.


Things that people have done on site or in-app.

Email Activity

Find everyone who has opened your emails.

Segment people by:

viewed this page:

at least 3 times within the last 30 days

Ready to Buy

People who:
have viewed the page /pricing at least 3 timesx
facebook_connect is equal to truex
OR have performed the event invited_friendx
subscription_trial is equal to truex
Combining Segments

Create a “My best customers” segment with people who:

  • pay at least $50 a month
  • log in at least 10 times a month
  • have clicked on our emails
  • upgraded from push notification campaign
Export Segment Data to CSV

Slice and dice your data in Customer.io and then export it to do a deeper dive in Excel or another system.

Context for every conversation at your fingertips

Rich Customer Profiles

Customer.io captures on-site and in-app behavior to build profiles of every single sign up.

Activity Stream

See how people are using your app. You'll have a view of activity for every person in the system.

Archives of Every Message

You'll have the history of every message sent to that person (and whether or not they opened your emails).

All this power from a simple integration

Customer.io's stress-free integration plugs into your website or mobile app, making your data available in real-time for messaging and decision-making.


Include the Customer.io Javascript snippet on your site.


We have libraries for most programming languages.


Our friends at Segment.com provide one-click integration to send data to Customer.io.

Do more with your behavioral data.

Connect our powerful segmentation and automation engine with other apps to drive user behavior, increase engagement, and save time.

See what you can do

Add messaging channels

Harness Customer.io's best-in-class rules engine for any targeted messaging channel, like SMS, push notifications, and even snail mail.

Connect to other business apps

Trigger sophisticated workflows to automate behavioral data updates to other marketing, sales, productivity, and collaboration tools.

Start now with a 30-day free trial

No credit card required

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