ConvertKit vs Customer.io: Side-by-Side Comparison (2025)

Choosing between ConvertKit and Customer.io comes down to your specific use case. ConvertKit is built for creators, bloggers, and course sellers, while Customer.io targets product and growth teams sending behaviour-triggered messages.

Quick Verdict

Overall winner
ConvertKit
Better pricing
ConvertKit
More features
Customer.io
For beginners
ConvertKit
E-commerce
ConvertKit

Feature Comparison

Feature ConvertKit Customer.io
๐Ÿ’ฐ Pricing
Free Planโœ“โœ—
Starting Price$29/mo$100/mo
Free Trialโœ“โœ“
โš™๏ธ Features
Email Automationโœ“โœ“
Visual Workflow Builderโœ“โœ“
Landing Pagesโœ“โœ—
Built-in CRMโœ—โœ—
SMS Marketingโœ—โœ“
A/B Testingโœ—โœ—
E-commerce Integrationโœ“โœ—
Transactional Emailโœ—โœ“
Remove Brandingโœ—โœ“
๐Ÿค– AI Features
AI Subject Linesโœ—โœ—
AI Send-Time Optimisationโœ—โœ—
๐Ÿ›Ž Support
Email Supportโœ“โœ“
Live Chatโœ—โœ“
Phone Supportโœ—โœ“
ConvertKit
โ˜…โ˜…โ˜…โ˜…โ˜† 4.4/5
Customer.io
โ˜…โ˜…โ˜…โ˜…โ˜† 4.4/5
Our verdict

ConvertKit is best for creators, bloggers, and course sellers.

Try ConvertKit Free โ†’
Our verdict

Customer.io is best for product and growth teams sending behavior-triggered messages.

Try Customer.io Free โ†’

Which Should You Choose?

Choose ConvertKit ifโ€ฆ

  • You are primarily focused on creators, bloggers, and course sellers
  • You value visual automations
  • You prefer freemium pricing
Try ConvertKit โ†’

Choose Customer.io ifโ€ฆ

  • You are primarily focused on product and growth teams sending behaviour-triggered messages
  • You value behavioural triggers
  • You prefer paid pricing
Try Customer.io โ†’

Frequently Asked Questions

Is ConvertKit better than Customer.io?

It depends on your use case. ConvertKit wins for creators, bloggers, and course sellers, while Customer.io is stronger for product and growth teams sending behaviour-triggered messages.

Which is cheaper, ConvertKit or Customer.io?

ConvertKit starts at a lower price point. Pricing scales with subscriber count so total cost depends on your list size.

Can I switch from Customer.io to ConvertKit?

Yes, switching is possible. Most platforms support CSV import/export. Plan time to recreate automations and templates.