Communicate Better

Customer.io helps you send targeted human messages to your users, by utilizing their unique interactions with your business.


Customer.io - Visualized

Customer.io plugs perfectly in to your website or mobile app

Immediately your real-time data is streaming in to Customer.io and triggering actions based on rules you control.

Precisely Timed

Send emails based on what people do (or don't do). Our best in class rules engine makes triggering sophisticated emails easy.

Powerful Email Software

Flexible segmentation, Comprehensive reporting and A-B testing are a sample of our enterprise-class features in every Customer.io account.

Know your customer

We track the way people use your app and keep every email you send each person. You can use that history to tailor each person's experience.



Trusted by companies like

Shopify, Viki, and Pebble are just some of the companies that use and trust Customer.io!

Enterprise-Grade Software.
Sold by Humans.

No high pressure sales tactics and no long term contracts. You can start with our free plan and send up to 400 emails a month to 200 people.

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