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Custom integration FAQs

How to Setup Klaviyo Server-Side Tracking (2025 Updated Tutorial)
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Custom integration FAQs

In this setup I use Klaviyo’s Custom Integration FAQs to confirm what customer properties and event structure Klaviyo recommends. When you are mapping items arrays and customer fields in server-side GTM, this doc helps you stay aligned with the correct format. I check it especially when I’m sending enriched purchase data for better attribution.

Pros

  • +Clarifies which customer properties and event fields Klaviyo expects
  • +Helpful reference when building items arrays and advanced tracking
  • +Reduces mistakes during server-side implementation

Cons

  • -Still requires you to map your own dataLayer correctly
  • -Some parts can feel technical if you are new to server-side GTM

Curated by

Md Faisal Amin