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Klaviyo API (Previous Stable)

JSON →
api v2025-04-15
api_key
communication

REST API for email marketing and customer data platform. Base: a.klaviyo.com

https://a.klaviyo.com

Resources

docsdevelopers.klaviyo.com ↗
homepagewww.klaviyo.com ↗

API endpoints

full doc /v1/registry/klaviyo-api-previous-stable