Cherry Seed

Should I use server-side tracking with Klaviyo?

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Quick Answer

Yes for transactional accuracy (orders, subscriptions). Native WooCommerce/Shopify integrations already run server-side via webhooks. Add manual server-side tracking for custom events, backend processes, or mobile apps. Use Klaviyo Track API for events, Identify API for profile updates. Server-side ensures 100% data capture.

Full Answer

Server-side tracking with Klaviyo guarantees 100% event capture by sending data directly from your server to Klaviyo's API, bypassing browsers entirely. This is essential for transactional events (purchases, subscriptions) and beneficial for behavioral tracking accuracy. When to Use Server-Side Klaviyo Tracking Use server-side for:

  • Transactional Events
  • Orders, refunds, subscription changes (critical, must be 100% accurate)
  • Backend Processes
  • Recurring billing, admin actions, automated workflows
  • Mobile Apps
  • Native iOS/Android apps without web views
  • High-Value Events
  • Anything that triggers revenue-impacting flows (cart abandonment, post-purchase sequences)
  • Privacy Compliance
  • Controlled data sending (no third-party scripts) Native e-commerce integrations (WooCommerce, Shopify plugins) already use server-side tracking for orders—you're adding server-side for custom events beyond what plugins cover. Klaviyo Track API The Track API sends events to customer profiles. Endpoint: Payload Structure: Required Fields:
  • token
  • Public API key (6-character alphanumeric)
  • event
  • Event name...

Sources

Programmatic Access

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Cherry Tree by Seresa - https://seresa.io/seed/klaviyo-email/_archive-klaviyo-server-side-tracking