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These docs are for v2023-01-24. Click to read the latest docs for v2024-05-15.

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Use cases
Build custom integrations to bring data into Klaviyo to create personalized experiences. Integrate with point-of-sale software, inventory management systems, scheduling apps, and more.
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Brian Whalley - Co-Founder of Wonderment
“Since Klaviyo doesn't impose a rigid data schema, it's easy to send in just about any arbitrary data without having to do annoying manipulations or data mappings and without having to pre-configure a data schema in the app.”
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Use profile information, custom events, catalog information, and other types of data to build custom customer experiences using Klaviyo's flows, template email builder, and more.
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Callum McMaugh - Techincal Lead at Giftnotes
“Merchants can set up flows based on Klaviyo events to send out branded notifications to both the [gift] recipient and the customer. They can also segment the customer and the recipient for greater insights into their customer’s shopping habits.”
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Pull data from Klaviyo to create dashboards, sync to other systems, and perform analysis to keep up with your marketing performance.
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Kyle Tremblay - Sr. Product Manger at EXCLUSIVE
“Integrating with Klaviyo’s APIs was a no-brainer as it allowed us to build reporting that’s informed by our clients’ goals. Additionally, we’re now able to highlight useful, holistic insights to determine what actions should be taken by our clients to meet their goals.”
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Custom integrations image Better user experience image Reporting image