Customer.io vs Brevo: Which Should You Choose in 2026?
Choosing between Customer.io and Brevo comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
By Toolradar Team · Last updated May 6, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Customer.io
Automated messaging based on user behavior
Best for you if:
- 0
- • You need workflow automation features specifically
- • Customer.io is a marketing automation platform for sending targeted emails and push notifications
- • It triggers messages based on user behavior with powerful segmentation and workflow builders
Brevo
All-in-one marketing platform for email, SMS, and customer engagement
Best for you if:
- 0
- • You want to try before committing
- • You need transactional email features specifically
- • Formerly Sendinblue, now Brevo
- • 300 free emails/day forever
| At a Glance |  Customer.io |  Brevo |
|---|---|---|
Price | Paid | Free + Paid |
Best For | Workflow Automation | Transactional Email |
Rating | — | — |
| Feature | Customer.io | Brevo |
|---|---|---|
| Pricing Model | Paid | Freemium |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Workflow AutomationCustomer Data Platform | Transactional EmailSMS Marketing |
How Customer.io and Brevo Compare
Customer.io
Automated messaging based on user behavior
Paid
Brevo
All-in-one marketing platform for email, SMS, and customer engagement
Free tier available
Customer.io is a workflow automation tool. Brevo is in transactional email.
Who Should Use What?
On a budget?
Brevo has a free tier. Customer.io is paid only.
Go with: Brevo
Want the highest-rated option?
Neither has user reviews yet.
Go with: Customer.io
Value user reviews?
Neither has user reviews yet.
Go with: Customer.io
3 Questions to Help You Decide
What's your budget?
Customer.io is paid. Brevo is freemium. Brevo lets you start free.
What's your use case?
Customer.io is a workflow automation tool. Brevo is in transactional email. Pick the category that matches your needs.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Customer.io
- 0
- Our pick for this comparison
Brevo
- Has a free tier
- Better fit for transactional email
The Bottom Line
Customer.io is our pick. Brevo has a free tier if you want to test without paying.
Frequently Asked Questions
Is Customer.io or Brevo better?
Customer.io is rated high in our evaluation. Customer.io is paid and Brevo is freemium.
What are Customer.io and Brevo used for?
Customer.io: Automated messaging based on user behavior. Brevo: All-in-one marketing platform for email, SMS, and customer engagement.
What does Customer.io cost vs Brevo?
Customer.io is a paid tool. Brevo is freemium (free tier + paid plans). Visit their websites for detailed pricing.