Customer.io Reviews & Product Details - Page 3

With CustomerIO, it's been super simple for us to set up in-app messages and really personalise the messaging to our specific set of users. Really cuts down engineering time that is better utilised in development of core feature. The support from their team has been pro-active whenever we've run into issues. The initial integration was quick & fast. Review collected by and hosted on G2.com.

Setting up an in-app around our style guide takes some time (e.g. our buttons have very specific colour rules etc.), it would be great if we could set up two or three standard templates to start off with, like for tooltip, pop-up, and slide-out in-apps. Review collected by and hosted on G2.com.

The rapid advancement of AI presents both opportunities and challenges for Customer.io if they really striving for seamless digital integration of AI. More automation will amplify the ability to deliver campaigns, the objective should always be real-time customer journey management in the most cost efficient (in terms of labour required on CRM works) and effectiveness of the campaigns and the impact on customer journey. Review collected by and hosted on G2.com.

Automation of the campaigns, automatic translation to multiple languages, it will significantly improve the value of the product. An agentic AI engine should be integrated ASAP. This is in order to support growth of enterprises that rely on Customer.io for their CRM partner Review collected by and hosted on G2.com.

I use Customer.io daily to send bulk emails and run targeted campaigns. It’s easy to use, simple to implement, and integrates well with other tools. The segmentation and automation features help send the right mails to the right persons, and their customer support is always responsive and helpful.” Review collected by and hosted on G2.com.

The platform has a bit of a learning curve at the start, especially when setting up advanced workflows. Pricing can also feel high for smaller businesses as the contact list grows. The interface, while powerful, could be made a little more intuitive for beginners. Review collected by and hosted on G2.com.

Integrations. Using zapier also I can do so many things, and I have explored little of the potential yet. Secondly definitely the ability to insert events to trigger my campaigns: very useful!

They recently introduced direct integration with WhatsApp: fantastic. In general, they update their features very often, which I really appreciate. Review collected by and hosted on G2.com.

I struggle a bit with linking people to segments, and not all campaigns start for me on the first go.

Sometimes updates are not very intuitive and require some study. Review collected by and hosted on G2.com.

Customer.io has launched new AI-related features that are very interesting and easy to use. It saves a lot of time and manual work, such as generating new segments by providing a detailed description.

Another feature that our team likes is the design studio, which is fantastic. We will use it more in the future, as we previously had Stripo.

Finally, the new layout for creating campaigns is great, and campaigns can be duplicated from other workspaces. Review collected by and hosted on G2.com.

I think they have done a great job lately with all the new releases, they should continue doing the same Review collected by and hosted on G2.com.

The user experience is very intuitive and seamless. The features work as they should and the flows are designed properly. Other user engagement platform I have are not as powerful as Customer IO either because they don't have as many useful features or their features are not built optimally.

The process of creating and editing segments is very easy and campaigns are also straightforward to create and monitor.

Customer IO integrates well with other data platforms like Mixpanel and this allows me to give the impact of engagement campaigns across board. Review collected by and hosted on G2.com.

I wish Customer IO had AppsFlyer as a source on it's integrations directory so I can pass attribution data like campaign name or source from AppsFlyer to segment users and personalize workflows. Review collected by and hosted on G2.com.

The platform it's really complete and easy to use. They have tons of integrations and let's us to integrate easily with our own datalake, enabling us to rapidly start our campaigns with e-mail and WhatsApp. The Customer Support is also a big differentiator. Even tho we use in the Essentials plan, the support is fast and they solve all our problems. And, if it is a software-side, they actually fix and update it. Review collected by and hosted on G2.com.

I'd love to see a option to bulk edit my webhooks and to create variables with base urls or something. Because, we use a lot of webhooks for our custom Twilio integration, in tons of campaigns, but they're quite similar, so it would be handy if we had this option. Review collected by and hosted on G2.com.

Customer.io has become the backbone of our lifecycle marketing. Its real-time segmentation and event-driven automation make it easy to build highly personalised journeys that adapt to user behaviour. We’ve used it to run structured onboarding campaigns, abandoned cart flows, and reactivation series — all of which can be tailored at scale without heavy developer lift.

I particularly value how Customer.io integrates seamlessly with our wider stack. Combined with RudderStack and BigQuery, it enables a closed-loop system: capturing user attributes, segmenting audiences, sending personalised emails/push, and feeding engagement data back into our warehouse for analysis. We’ve even extended it to drive ad personalisation with AdButler banners via webhooks, which shows the platform’s flexibility beyond core messaging.

The workflow builder is intuitive but still powerful — you can run no-code campaigns or drop into API/webhook mode when you need more control. From onboarding emails to gamification-based engagement rewards, Customer.io has allowed us to run sophisticated, conversion-focused campaigns that respond directly to user behaviour.

Finally, Customer.io has been strong for data-driven marketing. With detailed activity logs, behavioural triggers, and custom events, we’ve been able to build a comprehensive customer lifecycle journey map, keeping messaging consistent across acquisition, activation, retention, and win-back. Review collected by and hosted on G2.com.

The main challenge is that some advanced integrations (e.g., syncing with third-party ad servers or building custom event pipelines) can require developer involvement and ongoing maintenance. While Customer.io offers strong webhook support, there’s no native integration with certain platforms, so you sometimes have to engineer workarounds. Review collected by and hosted on G2.com.

I find Customer.io valuable for setting up onboarding and marketing automation emails. These create a lot of value in user activation, monetization, and retention. I appreciate the flexibility that the feature set enables. The features I find most useful include the campaign builder, broadcasts, and transactional emails. I would choose it again for the effective feature set, and I have no intention of switching. Review collected by and hosted on G2.com.

Setting up Customer.io easy if you have experience with workflow tools. Customer.io's UX could be better and more user-friendly. There are signs that they're moving in a user-friendly direction, with capabilities like setting up segments based on natural language prompts. Review collected by and hosted on G2.com.

I've been using CustomerIO for 1.5 year now, and it has been a great experience. I really enjoyed using some of the recently introduced features: the new email editor and the design studio. While I was happy using the traditional editor, this new version is more versatile and lets me design even better and visually appealing marketing emails and newsletters. Awesome work, team :) Review collected by and hosted on G2.com.

Don't have any specific suggestions as of now. Everything has been great so far. Review collected by and hosted on G2.com.