Customer.io vs Klaviyo: Which Should You Choose in 2026?
Choosing between Customer.io and Klaviyo 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.
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
Klaviyo
Email marketing for e-commerce
Best for you if:
- 0
- • You want to try before committing
- • You need email marketing features specifically
- • Klaviyo is an email and SMS marketing platform built specifically for e-commerce
- • It provides advanced segmentation, automation flows, and predictive analytics for online stores
| At a Glance |  Customer.io |  Klaviyo |
|---|---|---|
Price | Paid | Free + Paid |
Best For | Workflow Automation | Email Marketing |
Rating | - | - |
| Feature | Customer.io | Klaviyo |
|---|---|---|
| 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 | Email MarketingMarketing Automation |
How Customer.io and Klaviyo Compare
Customer.io
Automated messaging based on user behavior
Paid
Klaviyo
Email marketing for e-commerce
Free tier available
Customer.io is a workflow automation tool. Klaviyo is in email marketing.
Who Should Use What?
On a budget?
Klaviyo has a free tier. Customer.io is paid only.
Go with: Klaviyo
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. Klaviyo is freemium. Klaviyo lets you start free.
What's your use case?
Customer.io is a workflow automation tool. Klaviyo is in email marketing. 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
Klaviyo
- Has a free tier
- Better fit for email marketing
The Bottom Line
Customer.io is our pick. Klaviyo has a free tier if you want to test without paying.
Frequently Asked Questions
Is Customer.io or Klaviyo better?
Customer.io is rated high in our evaluation. Customer.io is paid and Klaviyo is freemium.
What are Customer.io and Klaviyo used for?
Customer.io: Automated messaging based on user behavior. Klaviyo: Email marketing for e-commerce.
What does Customer.io cost vs Klaviyo?
Customer.io is a paid tool. Klaviyo is freemium (free tier + paid plans). Visit their websites for detailed pricing.