Customer.io provides a blank canvas for you to design and implement your business’s unique messaging strategy.
Customer.io provides multiple ways to get real-time business data from your product into our platform to power all of your automated messaging and keep your user database up-to-date.
Our RESTful API allows you to create, update, and delete people. You can also send event data from your application to Customer.io in multiple library languages (including Ruby, Python, Go, and more).
Upload user data as a CSV file, sync data from a SQL database with our Reverse ETL, or manually add new people through the UI to start sending messages even faster.
Dive into the API
If you’re already using Segment , mParticle , Hull , or RudderStack your integration can be completed in just a few clicks! Customer.io also supports data coming in from Zapier and adds new third-party integrations all the time.
Explore our integrations
Customer.io’s segmentation engine is built for speed and flexibility. Segments are calculated in real-time and performance scales with your business. With no limits on segmentation, you can be incredibly specific with whom you target.
Group people by…
Pages they view
What they do in your product
Anything else that you send with Customer.io
Use segments for…
Sometimes you need to isolate a specific person or a set of people by attributes. Easily view a full log of event and attribute data, where users are engaging, what messages they have received, and more.
Start saving time and money by syncing your Customer.io segments to your ad network of choice. Retargeting the right users and showing the best ads to your most valued customers is seamless with Customer.io.
Learn how to save time
Our rules-based visual workflow builder gives you the control you’ve longed for and the power needed to define your optimal user experience.
Explore the workflow builder
Built for speed, deliverability, and reliability. Our Transactional API offers the flexibility to apply your existing layouts and styles in Customer.io to your transactional messages. Consistent branding is essential across all your messages, not just marketing emails.
Level up your transactional messages
You have the tools to target the right users with Customer.io. Take it one step further and use Collections to include specific information about your business and tailor it for each individual person. Importing your Collection data is easy. Upload a CSV, Google Sheet, or use our API.
Learn how to use your business data
Make every announcement count. Use Customer.io to send multichannel newsletters within the user’s time zone to make sure your Terms of Service update or new feature brief lands at the top of the inbox.
Move beyond opens and clicks to measure the success of your campaigns. Deep dive into the number of conversions and the amount of revenue they drive by filtering, viewing, and comparing metrics across all of your workspaces.
Stay on top of your messaging health. Monitor your message leaderboard, segment membership, active A/B tests, and delivery metrics to identify spikes or trends over time.
Connect your Customer.io data and your internal reporting via CSV exports or send the data directly to your data warehouse of choice without accruing additional costs or headaches.
Compare campaigns, newsletters, and API-Triggered Broadcasts metrics across your entire workspace in seconds. Shake things up and define reports by name, tags, channel type, or specific time ranges.
Turn every idea into a test. Whether it’s a single piece of a message or an entire flow, put it into action. Experiment with campaign subject lines, message content, delivery time, and more. Keep track of all the running a/b tests right from the dashboard.
Whether your organization is at the enterprise or start-up level, we have the infrastructure to support you. Enjoy the flexibility to scale your messages as you grow. Used by businesses with 100M+ customers.
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With a 99% CSAT score, our support team ensures the highest level of success. Every customer has access to email support and will hear back within 24-hours.
“You guys always have legit support. I’ve used you for five years now at different companies and you’re always my pick. No different here. Absolute advocate of your brand.”
“Aaron’s email was the best response that I have ever got from technical support teams from any company. It has the most details. I really appreciate him. “
“You honestly have the BEST customer support. So quick, thorough, and resolves all our questions fast. I lead our Customer Experience team and I use you guys as an example. “
“The technical support from customer.io is consistently great! I received a prompt and well manner response from Aaron. Aaron’s email answered my question exactly, offered me continued support and was very well written in general…It is a genuine pleasure to correspond with their team.”
“Your support team member (Aaron) was able to dig into our account and find the root cause of my question. He provided helpful links and information to help me troubleshoot should a similar issue arise in the future. On top of that, the answer was prompt. Thank you!”
“Never disappointed with the level of service received from customer.io. I always receive prompt, polite and helpful replies from the team. At this point, I look forward to finding a reason to contact. Keep it up!!”
“Support has been immediate and accurate, I really appreciated the deep explanation and the options provided as solution to the problem.”
“Great support. Brandi not only offered me the info I was looking for, but also adjacent steps that would help me further along. Lots of <3! “
“Expected the people who provide my email software to be able to help with email marketing expertise. Expectations met. Woohoo!”
“Very good and relevant response, excellent service!”
“You guys are awesome! And give such a personalised service. It makes it a real pleasure to work with you.”
“My question was understood well and replied accordingly. Nice to see the empathy. “