{# DE + SK hreflang odebráno 2026-05-24 — viz core/settings.py LANGUAGES. cross_lang_alternates is set False by views whose CS/EN versions live on DIFFERENT paths (KB articles/categories, blog posts) — there the naive same-path alternate would point at a non-existent URL, so we emit only the self-canonical instead of a wrong reciprocal. #} Skip to content
Klaviyo

Server-side Klaviyo Events API

Send e-commerce events to Klaviyo through server-side GTM — reliable measurement for email and SMS automations without losses to ad-blockers.

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Why server-side for Klaviyo?

Klaviyo automations (abandoned cart, post-purchase flows) are only as good as the data they receive. Client-side Klaviyo.js loses events to ad-blockers — which means unfired flows and lost revenue. The Klaviyo Events API sends events server-side and ensures no trigger falls through.

How it works with DataNostro

In Connections you paste your Klaviyo API key. E-commerce events (Viewed Product, Added to Cart, Started Checkout, Placed Order) are sent server-side with the customer profile — ready for segmentation and flows.

Detailed guide How to set up Klaviyo server-side — step by step

Why Klaviyo through DataNostro?

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Reliable flow triggers

Server-side events fire abandoned-cart and post-purchase flows even where client-side fails.

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E-commerce events

Viewed Product, Added to Cart, Started Checkout, Placed Order — the full funnel.

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Profile data

Events are sent with the customer identifier for accurate segmentation.

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No developer

Paste your Klaviyo API key in Connections — done in minutes.

Frequently asked questions

Does it replace Klaviyo.js on the site?
Server-side complements (or replaces) client-side onsite tracking. Keep Klaviyo.js for on-site personalization; use server-side for reliable events and flows.
Does it work with Shopify / WooCommerce?
Yes. DataNostro sends e-commerce events to Klaviyo platform-independently through server-side GTM.

No missed Klaviyo trigger

Server-side Klaviyo Events API in minutes. Reliable flows, accurate data.

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