Customer.io Reviews & Product Details - Page 2

I like how Customer.io’s segments make it easy to target the right audience with precision. The ability to create dynamic segments that update in real time based on user behavior or attributes helps ensure messages are always relevant and personalized. It saves time and improves engagement. Review collected by and hosted on G2.com.

A valid downside is that Customer.io charges based on the number of users rather than emails sent. For businesses that send fewer emails to a large audience, a per-email pricing model would be more cost-effective and flexible. Review collected by and hosted on G2.com.

Customer.io keeps getting better with every update. Beyond the flexible workflows, advanced segmentation, and seamless integrations I’ve always appreciated, the platform has recently added some really valuable features:

Smarter SMS & WhatsApp: We can now automatically handle SMS replies (like STOP/UNSUBSCRIBE or even custom keywords) and use branded domains for shortened links, which has improved both trust and engagement.

Better Scheduling: Newsletters can be rate-limited and delivered in each user’s local timezone, making campaigns feel more personal while protecting deliverability.

AI Enhancements: The platform now suggests descriptions for data attributes/events and even analyzes survey feedback with AI, which saves our team time and improves clarity.

Improved Analytics: The new deliverability dashboard gives detailed insights into engagement and inbox placement across different providers.

Modernized In-App Messaging: The upgraded in-app editor is much smoother and more powerful than the legacy version (which sunsets in 2026).

Overall, these updates show that Customer.io is not just keeping up with the market but pushing ahead. It’s become an even more complete and reliable platform for personalized, multi-channel communication. Review collected by and hosted on G2.com.

While the platform is excellent overall, there are still a few areas where it could get even better:

Documentation depth: Some of the more advanced features (like AI tools, deliverability dashboards, or complex event/attribute setups) could benefit from more in-depth tutorials and real-world examples.

UI performance: The interface is powerful but sometimes feels a bit heavy or slow to load, especially when managing larger workspaces or big datasets.

Learning curve: With all the new features being added, it can take time for new team members to fully understand how to best use everything. A more guided onboarding or contextual help could smooth this out.

Pricing transparency: The platform is enterprise-ready, but clearer pricing tiers for scaling SMS, WhatsApp, and advanced analytics would make planning easier.

These are relatively minor compared to the value Customer.io provides, but addressing them would take the user experience to the next level. Review collected by and hosted on G2.com.

CIO is constantly coming up with new features/tweaking existing features to make it easy for someone with minimal CRM or coding experience to set up campaigns. One particular feature that i love using is the steps on in-app - previously we would have to create multiple in-apps and manually link them together, now everything can be done on the same screen. Review collected by and hosted on G2.com.

Really happy that my previous suggestion was taken into consideration, we now can see how many % of clients in a particular segment has already received more than 1 msg in the last 7 days. An improvement top of mind is - lets say today i want to send a broadcast to a list of audience - i want to e able to know before i hit send that x no. of clients wont receive this email because of the send limit rate. We can compulsory notification and optional marketing comms going out, compulsory notifications shouldnt be counted in send limit. Review collected by and hosted on G2.com.

What I really like about Customer.io is its intuitive and user-friendly interface. It’s very easy to understand and navigate, which makes my daily work smooth and efficient. I also find it simple to train others on the platform, which is a big plus.

I appreciate the ease of implementation — for example, setting up admin passwords and making necessary changes is quick and hassle-free. The customer support team has also been very responsive and helpful whenever I needed assistance, which gives me confidence in using the platform. Additionally, the ease of integration with other tools makes workflows much more seamless, saving time and effort. I use this platform every single day. Review collected by and hosted on G2.com.

I rated Customer.io an 8 mainly due to recurring access issues. Even when we already have access, we often face problems logging in or navigating certain features. At times, resetting or setting a password becomes time-consuming because the system logs us out repeatedly, which delays our work. While the platform is otherwise effective, these access challenges impact efficiency and prevent a higher rating. Review collected by and hosted on G2.com.

They recently released the Design Studio, which makes it much easier to have a consistent brand across all of our content and communications. Our designer was able to go in and redesign all of our emails, and I then recreated our email campaigns. Segmenting users is relatively easy as well, whether manually uploaded or automated. It was easy to learn and implement newer features, their customer support is always responsive, and it integrates well with the rest of our software stack. I use it multiple times a week and never run into any issues. Review collected by and hosted on G2.com.

One thing we are struggling with is targeting visitors to our site who have not signed up for a trial yet. We are only able to send communications to people with a User ID as of now, so we are having to use a different platform for those marketing efforts. Review collected by and hosted on G2.com.

Customer.io keeps up with our data. It ingests thousands of attributes and events, the segment builder stays fast, and new events trigger journeys in real time. Liquid makes personalization easy. We can branch, A/B test, and call webhooks to plug into the rest of our stack. It’s definitely made high-volume, event-driven messaging feel practical. Review collected by and hosted on G2.com.

Analytics are a miss. The built-in reports feel shallow and it’s hard to answer basic questions without exporting. I end up doing real analysis in our warehouse or Amplitude. Journey and channel rollups are limited, time windows are rigid, attribution is pretty basic, and A/B test stats are thin. I just want queryable data and dashbaords I can trust inside the tool. Review collected by and hosted on G2.com.

I appreciate the recent developments in Customer.io's content editor for emails and in-app messages, which were previously less user-friendly and flexible. The advancements made have significantly improved its editing capabilities and functionalities. I enjoy the great in-app messaging features and the ease with which I can build emails. The granular segmentation solutions are another aspect I find valuable, as they offer extensive possibilities for targeting and personalization. Additionally, the testing functionality in Customer.io stands out to me as a beneficial feature. Review collected by and hosted on G2.com.

I find the layouts and placement possibilities of the in-app messages limited in Customer.io. It would be beneficial if I could place them in various parts of the page. For instance, having the option to position them at the corners with diverse animations or effects when they appear or hide would be a significant enhancement. Review collected by and hosted on G2.com.

I really appreciate Customer.io for its ease of use and comprehensive feature set, making it incredibly efficient for managing our email marketing needs. The software excels in its ability to integrate seamlessly through webhooks, which enhances our operational workflow significantly. One of the standout integrations for me is Twilio, which proves to be very beneficial. I love that Customer.io does a fantastic job at keeping up with customers without creating duplicate profiles, which simplifies our data management processes. Moreover, the platform offers superior capabilities for email design, and I am impressed by how responsive and fast the systems are. The API's robustness is another aspect I highly value. Overall, Customer.io has done a remarkable job with the user interface and the availability of features, particularly the tracking API and the app API, which contributes to a smoother user experience. Review collected by and hosted on G2.com.

I find it inconvenient that Customer.io requires creating a customer profile to send an email. It would be beneficial to have the capability to send emails without needing to create a customer profile. Review collected by and hosted on G2.com.

It makes customer the whole process of sending out customer comms seamless. We're easily able to segment and group users based on our criteria and we always know the info is up to date and ready to go. The straightforward setup process, despite needing some technical assistance and planning, was not overly complex and worked well with our requirements for sending communications. One standout feature is the ease of conducting A/B testing; this capability has significantly streamlined our testing processes, allowing for quick data-driven decisions in broadcasts. The recent introduction of live reporting on workflows is another highlight, providing real-time insights which are highly beneficial for monitoring and adjusting campaigns on the fly. Moreover, Customer.io consistently sends examples of potential use cases, which I find incredibly helpful for sparking new ideas and strategies. Additionally, the active user information base and the responsive customer service team are commendable; their prompt and effective support has been a vital asset. Overall, the combination of these features makes Customer.io an invaluable tool in our customer engagement strategy. Review collected by and hosted on G2.com.

Reporting could be a bit easier. I love the recent real-time reporting updates for workflows, but if I'm looking for historical data, it gets a bit convoluted. Review collected by and hosted on G2.com.

It ticks all our base needs smoothly, like:

1. Welcome emails for new users flow smoothly

2. Campaign-based drip emails for new users

3. Trigger-based emails based on in-product actions

4. Removing dead emails, spam-flaggers, and bounce recipients is very quick and easy with their filters and bulk actions

5. Having many different mailing lists that are manageable from a user-facing subscription center is so good

My engineering team never complains about setting stuff up to sync our product and Customer.io, which for me is like the most important thing. Review collected by and hosted on G2.com.

Sometimes segmentation logic can be frustratingly complex (particularly just a simple "date created" filter). I also wish Stripe's integration was easier to use rather than being a DIY webhook solution. Review collected by and hosted on G2.com.