Klaviyo API
klaviyo.com
Provides programmatic access to Klaviyo's B2C marketing platform for managing profiles, events, lists, metrics, flows, and campaigns across email, SMS, and other channels.
The Klaviyo API API has freemium pricing; offers a free tier (Free plan: up to 250 active profiles, 500 email sends/month, $5 of mobile messages/month, 10,000 Composer credits; developer test accounts and free API access available). Verified 2026-07-16 with per-field source links.
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no sourceFree tier
Free plan: up to 250 active profiles, 500 email sends/month, $5 of mobile messages/month, 10,000 Composer credits; developer test accounts and free API access available
klaviyo.com ↗Pricing
Free plan available; paid plans scale based on number of contacts and channel usage (email/SMS); enterprise pricing available
klaviyo.com ↗Rate limits
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