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Customer.io

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954 reviews
  • 1 profiles
  • 7 categories
Average star rating
4.4
#1 in 3 categories
Grid® leader
Serving customers since
2012
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Customer.io Reviews

Review Filters
Profile Name
Star Rating
607
300
32
6
9
Maciej K.
MK
Maciej K.
Marketing Manager at Livespace - Sell Smarter
09/28/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

Robust, Intuitive Tool with an Amazing AI Assistant and Easy Integrations

Okay, first of all, it’s a very tech-savvy tool. It feels robust, and the AI assistant is amazing—it really does the job well. Even if you’re not an expert in marketing automation, it still helps you get the work done. Yes, it’s technical, but the AI support makes it much easier to use and genuinely useful. I’d also say it’s very strong from a user interface standpoint. Even though it’s a complex tool, it does not seem confusing. The UI feels intuitive, and it lets you move quickly so you can get things done fast. Also very easy to integrate because of the native integrations with Zapier and webhooks.
Verified User in Environmental Services
UE
Verified User in Environmental Services
09/28/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

Behavior-Driven Journeys That Make Email Marketing Truly Useful

What stands out most to me is how Customer.io is built around behaviour rather than lists. Instead of blasting a static mailing list, you send it events (someone registered for a webinar, completed a module, didn't open the last three emails) and trigger messages off those actions. That makes it very natural to build journeys that react to what people actually do, which is where email marketing tends to get genuinely useful rather than just noisy.
Marlène M.
MM
Marlène M.
Brand Development & Experience Leader | Brand Identity, Storytelling & Community | Building Brands from Identity to Belonging | Europe · LATAM · U.S.
09/28/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

Powerful Personalization and Flexible Connectors for Targeted Audiences

The level of personalization you can achieve with your target audience based on events and profiles, as well as the connectors that the system supports.

About

Contact

HQ Location:
Portland, OR

Social

@CustomerIO

What is Customer.io?

Create personalized customer journeys that engage and convert with our versatile customer engagement platform. Scale, flex, and innovate at your own pace. Because when powered by data, your messages lead to meaningful relationships.Deliver meaningful interactions: Make every message relevant by building unique customer interactions across mobile and web using email, in-app messages, SMS, and push notifications.Designed to help you scale: Manage all your messaging in one place with a platform that seamlessly integrates with the tools you use every day.Data without limits: Put an end to data silos by easily moving real-time data from source to destination and crafting campaigns with unlimited profile attributes, events, or actions.

Details

Year Founded
2012
Website
customer.io