The branching logic within campaigns is phenomenal. I can create complex reactivation journeys that adjust the content based on a user’s balance or specific transaction history, all inside a single workflow that stays highly readable and easy to follow. Review collected by and hosted on G2.com.

Not being able to pull historical event counts directly through Liquid is a major hassle that forces us into manual workarounds. Additionally, since we restrict email visibility for data compliance, searching for specific profiles during QA checks is much slower and more frustrating than it needs to be. Review collected by and hosted on G2.com.

The user interface is exceptionally intuitive, which makes it easy to manage both complex drip campaigns and one-off broadcasts. I especially appreciate the built-in data transformation tools. Being able to update attributes and transform variables directly within the platform helps us cohort users accurately and keep full control over messaging as users move through different states. Review collected by and hosted on G2.com.

So far, the current AI features feel somewhat underwhelming and haven’t really moved the needle for us. They don’t seem to meaningfully improve our ability to build out new infrastructure or accelerate the launch process. That’s an area where I’d expect more innovation, especially given the current tech landscape. Review collected by and hosted on G2.com.

The interface strikes an ideal balance between power and simplicity. I especially enjoy the drag-and-drop builders, which let our team create MVPs and more complex workflows quickly. Another major plus for our day-to-day operations is the steady rollout of new features that address real workflow problems without adding unnecessary bloat. Review collected by and hosted on G2.com.

The platform can sometimes lag when we’re processing or managing large volumes of data. There are also occasional minor outages, although the team is transparent about them and communicates clearly. My biggest frustration is the lack of a robust mobile management interface, which makes it very difficult to handle internal emergencies when I’m away from my desk. Review collected by and hosted on G2.com.

What I like best about Customer.io is its flexibility and personalization capabilities. It makes it easy to create highly targeted email, SMS, and push notification campaigns based on real-time customer behavior. The workflow automation is powerful yet intuitive, allowing teams to build complex customer journeys without too much technical overhead. I also appreciate its strong segmentation, data integration options, and detailed analytics, which help improve engagement and conversion rates. Review collected by and hosted on G2.com.

What I dislike about Customer.io is that it can take some time to learn, especially if you’re new to marketing automation tools. Some features feel a bit technical and may need developer help to set up properly. The analytics could also be more user-friendly, and costs can increase quickly as your customer base grows. Review collected by and hosted on G2.com.

What I like most is how easy it is to set up and send targeted messages. It gives good control over who receives what, and you can create different flows without much confusion. I also like that it works well with data, so messages feel more personal instead of generic. The interface is clean and once you get used to it, managing campaigns becomes pretty smooth. Review collected by and hosted on G2.com.

One thing I don’t like is that it can feel a bit complex in the beginning, especially if you’re new to it. Some features take time to understand properly. Also, pricing can feel a bit high for smaller teams, and sometimes small changes in campaigns are not as quick as expected. Review collected by and hosted on G2.com.

The data model. Everything is built around events and attributes so segmentation actually reflects what users are doing, not just the fields you filled in. The visual campaign builder is fast after you understand it, and Liquid templating gives real control over personalization without needing a developer for every change. Review collected by and hosted on G2.com.

The built-in analytics are close to useless for real analysis. You have to pipe everything into an external platform just to answer basic questions about campaign performance.

Campaign-level exit criteria is limited to one condition. On complex journeys that gets restrictive fast.

The UI has small but constant friction points: no column sorting, no custom default views, things you'd expect from any mature SaaS tool.

The canvas is rigid. You can't move elements freely, which makes building and reading complex flows harder than it should be.

Event and attribute data has no visual layer. There's no quick way to sanity-check that data is flowing in correctly without digging into raw logs.

Testing a full journey is basically impossible. If you're building something with many branches and conditions, you need a way to walk a test user through the entire flow. That doesn't exist. Review collected by and hosted on G2.com.

I like that Customer.io makes it so easy and simple to create marketing emails across our dozens of clients. I love the integration with Twilio for SMS. But mostly, I love how responsive they are to questions, issue, concerns and feedback. The new AI integration has been great. I've spent the last few days training it on our workspaces and using it to assist with ideas for new projects and so far, I have been impressed. I cannot wait to integrate this new tool more into our email and sms workstreams. Review collected by and hosted on G2.com.

There really isn't much I dislike! I do think sometimes new features are rolled out without a ton of prior communication. And during testing or rollout of these new features, the platform can get slow or wonky. I think the huge features are communicated well. But for smaller things, it often creates issues, like when it only displayed emails up to 30 days for a week or two- a refinement that was not necessary and added more work. Review collected by and hosted on G2.com.

Customer.io is a rapidly growing CRM, and in my opinion, the best approach is to implement features instantly based on customer needs. Review collected by and hosted on G2.com.

Overall, everything is good, but one thing they could improve is adding customer support by phone/call. Review collected by and hosted on G2.com.

It works best with Flutter, and it’s easy to integrate with the app. Review collected by and hosted on G2.com.

some link have data in map formate now , there is key was change some time . there is space or other work Review collected by and hosted on G2.com.

It's very easy to get started with customer.io either via the UI/UX or via API. And the first thing that we check on customer.io is the integration with AI agent, since most of the work is now done with our in-house AI.

The support team is also helpful and the prices is very reasonable compare to competitor. The AI analyse function also provide a good suggestion on how to improve our email campaign. Review collected by and hosted on G2.com.

Sometimes we just need support team that is more technical than the current one Review collected by and hosted on G2.com.