Klaviyo is a growth marketing platform that helps online businesses deliver more personalized experiences across owned marketing channels.

At a glance
- Free tier
- Yes, up to 250 active profiles / 500 emails/mo
- Paid from
- $20/mo (email, up to 500 profiles); active-profile based · pricing page
- Public API
- Yes docs
- MCP server
- Yes · Official hosted MCP (mcp.klaviyo.com) in dev docs
- Best for
- Ecommerce/B2C brands running email + SMS on customer data
- Website
- https://www.klaviyo.com
Klaviyo pricing
Yes, up to 250 active profiles / 500 emails/mo. Paid plans start at $20/mo (email, up to 500 profiles); active-profile based. Current numbers live on the Klaviyo pricing page.
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How Klaviyo compares
See Klaviyo alternatives, or line it up head to head: Klaviyo vs Substack.
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