Customer.io Reviews in June 2026: User Ratings, Pros & Cons

"Powerful solution but not an inituitive UI/UX for beginners"

What do you like best about Customer.io? Many possibilities for communication with customers from emails to in-app messages. It is easy to personalise everything and integrate customer data for this as well. What do you dislike about Customer.io? Sometimes the complexity is a downside. With every campaign there is always some sort of unexpected behavior. What problems is Customer.io solving and how is that benefiting you? Easy communication flows and campaigns with customers

"Capable platform with a lot of possibilities,"

What do you like best about Customer.io? I like the advanced possibilites to use data for tailored messaging, both for content and building flows. What do you dislike about Customer.io? The drag-and-drop editor for email is lacking in its capabilities and is behind some competitors in the way it works. What problems is Customer.io solving and how is that benefiting you? We have big need in communicating with our customers and also driving behaviours that align with our business goals. The ...

"Best tool for automated customer messaging"

What do you like best about Customer.io? Customer.io is cabable to do a lot of things that would otherwise need to be custom built. I haven't found any use case which customer.io doesn't solve. What do you dislike about Customer.io? The interface can be a bit complex for non-techy users. But that's usually the case with tools that have really powerful capabilities. What problems is Customer.io solving and how is that benefiting you? We use customer.io to build onboarding sequences and ...

"Great tool for email marketing!"

What do you like best about Customer.io? I've tried different tools over the years, and I must say, I am very pleased to be using Customer.io, it has everything that I need and more. What do you dislike about Customer.io? Maybe the email editor could be improved a bit, or even allow import from different formats, but it would say it's mostly a nice-to-have. What problems is Customer.io solving and how is that benefiting you? Communicating with my users, and workflow automations for ...

"Amazing for campaigns and personalisation, tricky for the nitty gritty"

What do you like best about Customer.io? Customer.io makes it: - Really easy to segment users by different attributes, dates, events and much more - The ability to use liquid makes it easy to customise emails to a huge extent - Auto-creation of UTM makes it easy to track clicks, and further customisation can be added manually for really granular tracking - The Overview makes it easy to track opens/clicks/conversions/bounces/unsubs, both for the campaign as a whole and for individual ...

"Game changer for automating customer and onboarding messages!"

What do you like best about Customer.io? Super useful to create flows and trigger based campaigns. It's almost like playing with Legos where once you have enough building blocks set it, the entire flow or campaigns will work like magic. On top of that you can A/B test subjects or email copies like a piece of cake! What do you dislike about Customer.io? While the tool is an absolute beast, some little caveats like not being able to know what devices the emails are opened and read on can be a ...

"Connect with your customers at exactly the right moment"

What do you like best about Customer.io? Several ways to customise the journeys for your customers; tightly integrated into your product and your database, so you can engage with users at the moment they perform certain events or their status changes. What do you dislike about Customer.io? You definitely need the tech team's help to make it work! What problems is Customer.io solving and how is that benefiting you? We can easily set up marketing campaigns, and A/B test them with minimal help ...

"Best tool for automated customer messaging"

What do you like best about Customer.io? Customer.io is cabable to do a lot of things that would otherwise need to be custom built. I haven't found any use case which customer.io doesn't solve. What do you dislike about Customer.io? The interface can be a bit complex for non-techy users. But that's usually the case with tools that have really powerful capabilities. What problems is Customer.io solving and how is that benefiting you? We use customer.io to build onboarding sequences and ...

"Best Email engagement software"

What do you like best about Customer.io? We user customer.io to send Emails to our customers, both transactional and promotional. We are able to set and forget about the transactional campaigns is what I like best What do you dislike about Customer.io? To see what emails are being sent to each of our different users is a little difficult. I would like them to add some tooltips and guides for me to understand the product better What problems is Customer.io solving and how is that benefiting ...

"Customer.io helped us increase our week over week retention by 3x."

What do you like best about Customer.io? Customer.io has been a game-changer in our user engagement and marketing strategy. Its standout feature is its adaptability to seamlessly integrate with various tech stacks and its support for webhooks, giving you unparalleled control over your messaging. By harnessing their event-driven marketing capabilities, we were able to precisely target users throughout their customer journey. This strategic approach led to remarkable results, including a ...