Compare: Customer.io vs Klaviyo

A side-by-side analysis to help you find the right tool.

Customer.io

Paid($50–$200/mo)

Yes (free trial available)

Top Pick

Freemium($50–$200/mo)

Free tier (250 contacts)

Pricing Model

Customer.ioPaid

KlaviyoFreemium

Free Trial

Customer.ioYes (free trial available)

KlaviyoFree tier (250 contacts)

Company Size Fit

Customer.ioSmall Team (2–20), Mid-Market (20–200)

KlaviyoSolo / Freelancer, Small Team (2–20), Mid-Market (20–200), Enterprise (200+)

Business Type Fit

Customer.ioB2B, B2C

KlaviyoB2C, D2C / E-commerce

Target Channels

Customer.ioEmail Lists, Website Visitors, Existing Customers

KlaviyoGoogle Shopping, Instagram, Facebook, Email Lists, Website Visitors

Best For

Customer.ioSaaS and product-led growth (PLG) companies needing event-driven behavioral messaging

KlaviyoE-commerce brands needing behavioral email and SMS marketing

Pros

Customer.io

Unmatched ability to trigger messages based on exactly what users do *inside* a software product
developer-friendly
excellent visual builder

Klaviyo

(See full review in Email Marketing category). Unmatched e-commerce data integration
predictive CLV
the backbone of most modern DTC marketing stacks

Cons

Customer.io

Klaviyo