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Brevo vs Customer.io Comparison (2026)

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Brevo

Customer.io

Overview

Trusted by over 500,000 businesses worldwide, Brevo (formerly Sendinblue) is the affordable, all-in-one marketing and CRM stack that helps growing businesses scale faster.

Customer.io is a data-driven customer engagement platform enabling businesses to create personalized journeys across channels. It features a visual workflow builder for automating messages, omnichannel support for email, SMS, push, and in-app communications, and robust data integration. Customer.io uses first-party data and AI insights to deliver targeted messaging while ensuring compliance with GDPR, HIPAA, and SOC 2 Type II standards.

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Video & Screenshots

No videos yet

Pricing

Starting from

Per month

Free trial available
Credit cardless trial
Free account
Subscription based

Starting from

100

Per month

Free trial available
Credit cardless trial
Free account
Subscription based

User reviews

4.6

3.5K

2.5K

788

117

Value for money

Ease of use

Features

Customer support

86%

would recommend this app

4.6

Value for money

Ease of use

Features

Customer support

82%

would recommend this app

Pros

“Dragging templates, setting up conditional content, and seeing real-time performance stats in the dashboard keeps my workflow tight and saves me hours each month.”

Daniel C.

Senior Digital Marketing Manager

“We are integrating Brevo for transactional emails in our SaaS platform, including account verification, password resets, invitations, and system notifications.”

Tobi J.

Software Lead

“I appreciate the clear interface, the contact list management, the campaign editor, and the ability to centralize marketing emails, transactional emails, and automation in one tool.”

Arnaud M.

Développeur

Pros

“Customer.io gives us complete control over messaging, email, SMS, push, in‑app, with smart workflows and segmentation based on real behavior.”

Katie S.

Operations Manager

“We use it mainly to send newsletters, and for the automation system, sending targeted emails to our prospects.”

François M.

Marketing Manager

“We have different dedicated areas on customer.io to manage the different languages.”

François M.

Marketing Manager

Cons

“For example, the difference between imported contacts, eligible recipients, blacklisted contacts, unsubscribed contacts, and filtered contacts is not always immediately obvious. When a campaign shows fewer recipients than expected, it can be difficult to quickly understand why.”

Arnaud M.

Développeur

“One thing that could be improved is the account recovery and email change process. If you lose access to your old email address, updating login details can become quite complicated.”

Claudia P.

Formadora

“Unfortunately, I was unable to get our corporate IT group to enable domain authentication given that this was not a purchase made for our entire sales team but rather just one individual so I was ultimately unable to use the platform to send prospecting emails.”

Scott H.

Managing Partner

Cons

“The pricing model didn't make sense for our growing company, as you pay for all the contacts in your account, regardless of if they're active or not.”

Noga M.

VP, Marketing

“It can be difficult to search for specific emails as the UI is not the most intuitive, especially for new users.”

Paul P.

Head of Engineering

“We basically manage all our customer data in C.io and not being able to having KPIs and analytics related with customer actions and events is a little bit frustrating.”

Ali I.

Co-founder, head of product