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

"Worked great for us"

What do you like best about Customer.io? Easy to set up email and text campaigns, including AB testing, segmenting, and sending logic. It also allows you to get into more complex campaign and email design. I haven't used many competitors, so it's hard for me to compare it, but it worked really well for us. What do you dislike about Customer.io? handling exceptions that need changes to the database is hard. It would be nice to get an easy way to see results data in Airtable or Google Sheets ...

"CIO marketing platform review"

What do you like best about Customer.io? Customer.io has a lot of functionality to be an entirely self-service tool for marketing automation. We used it to send SMS and Email out on behalf of our clients and were happy with the results. What do you dislike about Customer.io? Its a little on the technical side to ensure that the segments and triggers are set up correctly to deliver the right messages to the right people. We had some issues with timestamps as attributes and trying to trigger ...

"Superb Marketing Automation - Simple Setup"

What do you like best about Customer.io? As a WordPress developer, Customer.io was extremely easy to integrate into our website. I entered our own Contact Us webpage URL into the Customer.io wizard, and Customer.io replied with some JavaScript to add to our page to enable the contact form to send data to Customer.io. What do you dislike about Customer.io? Sometimes I had difficulty getting rid of old forms. If I wanted to update the parameters of our form's connection with Customer.io, ...

"Customer.io is a very user-friendly, intuitive marketing automation platform."

What do you like best about Customer.io? The platform is straightforward and easy to use. Creating flows and adding filters and conditional paths is intuitive. What do you dislike about Customer.io? A feature similar to Braze's Connected Content would be handy for taking manual work off of the CRM teams. What problems is Customer.io solving and how is that benefiting you? We are currently using the platform for both transactional comms and CRM automated flows for our B2B and B2C audiences.

"Great email marketing software"

What do you like best about Customer.io? Easy to use, simple and intuitive UI, fast loading. Customer.io is great if you use Segment, the seamless integrations makes it super easy to get started. What do you dislike about Customer.io? The latest popup features they integrated are not great, it requires a lot of work. What problems is Customer.io solving and how is that benefiting you? Being able to send transactional emails without involving engineering

"Automated Campaigns"

What do you like best about Customer.io? I like that is a very robust platform and efficient to schedule and automate marketing campaigns and customer communications, What do you dislike about Customer.io? It is a complex app, and you will need to have some idea about API. The learning curve is not too difficult but it might be long What problems is Customer.io solving and how is that benefiting you? Organizing automated marketing campaigns and customer data entry

"Difficult to use for a complete newbie"

What do you like best about Customer.io? Once you learn the platform, you can easily send a bulk email importing csv file. Send push notifications or edit campaigns. Support was pretty responsive but not always helpful. What do you dislike about Customer.io? Complication of things and lack of training on using the platform. Complicated technical language in the FAQ articles. Lack of possibility to have a call with support to help setting up things/explaining the complex platform. What ...

"You can do almost everything with it"

What do you like best about Customer.io? Customer.io is a super flexible tool. I use it for transactional emails and communication. Specifically I plugged in Segment data so that I can send relevant material to everyone that sign-ups to our product. The drag and drop campaign builder is super cool and you can basically build super articulated journeys and cover all cases. I'm also using to thank new customers (Stripe webhook). Data-driven segments are just awesome to target specific cohorts ...

"Great platform - lack of support"

What do you like best about Customer.io? The platform is great, so much so they forgot that they need a great team. Dealing with their lack of customer support sours the experience. If you have attempted to claim the 12-month's credits there will be some excuse as to why you will not be receiving them. You will constantly be pushed around to talk to many reps and just end up with one that responds every 48 hours - with a very passive-aggressive tone. Honestly, a big disappointment because I ...

"Great for automated messaging campaigns"

What do you like best about Customer.io? 1. It provides a blank canvas, So we can implement a unique messaging strategy for our business. 2. Its push notification, Auto message, and data-driven email campaign features are quite good. What do you dislike about Customer.io? It's just quite expensive and sometimes sorting of data is complicated. What problems is Customer.io solving and how is that benefiting you? Majorly I used this software for auto messages, email, and push notifications ...