Klaviyo API Addon for GA4 PRO

Trusted by 85,000+ merchants using WeltPixel products

Klaviyo API Addon for Google Analytics 4 PRO

€99,00

Requirement Requires Google Analytics 4 PRO

Version 1.16.1

Updated March 6, 2026

Support 12 Months Included Support, with options to extend

Platform Magento Open Source, Magento Commerce, Magento Commerce Cloud B2B

Documentation User Guide

weltpixel.com

Server-Side Klaviyo Tracking That Works Where Pixels Fail

Transform your Magento 2 store's marketing capabilities with our Klaviyo API integration. This powerful solution establishes a direct, secure connection between your e-commerce data and Klaviyo's marketing platform, enabling precise customer tracking and enhanced campaign optimization across all channels.

Designed specifically for Magento 2 merchants, this server-side implementation ensures reliable data collection and accurate customer tracking, even in environments with strict privacy settings or ad blockers.

Server-Side Tracking

100% reliable event capture bypassing browser limitations and ad blockers

10 Events Tracked

From placed orders to viewed categories, all key customer interactions covered

Multi-Account Support

Send eCommerce event data to multiple Klaviyo accounts simultaneously

Key Benefits of Klaviyo API Integration

Advanced Customer Tracking

Bypass browser limitations and tracking prevention tools with server-side implementation, ensuring comprehensive data collection for all customer interactions and behaviors on your Magento 2 store.

Enhanced Data Privacy Compliance

Meet modern privacy standards while maximizing marketing effectiveness. Our server-side integration gives you granular control over data sharing, ensuring compliance with privacy regulations while maintaining optimal campaign performance.

Future-Proof Implementation

Stay ahead of browser changes and privacy updates with a hybrid tracking approach that combines server-side reliability with client-side flexibility, ensuring consistent performance as digital marketing evolves.

Centralized Data Management

Consolidate your Magento 2 store's marketing data through a single, reliable API connection. Streamline tracking implementation while ensuring consistent measurement across all customer touchpoints and marketing channels.

Event Tracking Features

The Klaviyo API Addon supports a comprehensive set of server-side events, capturing every meaningful customer interaction across your Magento 2 store and sending them directly to Klaviyo in real time.

Core Commerce Events

Server-side Placed Order Event Tracking, Server-side Selected Payment Method Event Tracking, Server-side Checkout Started Event Tracking, Server-side Added to Cart Event Tracking.

Browsing & Discovery Events

Server-side View Page Event Tracking, Server-side Viewed Product Event Tracking, Server-side Viewed Category Event Tracking, Server-side Product Searched Event Tracking.

Engagement & Lifecycle Events

Server-side Added to Wishlist Event Tracking, Server-side Created Account Event Tracking.

Flexible Event Control

Select the events you wish to send to Klaviyo via the API. Available options are: View Page, Placed Order, Added to Cart, Added to Wishlist, Checkout Started, Product Searched, Viewed Product, Viewed Category, Created Account, Selected Payment Method (Payment Information).

Powerful Integration Capabilities

The Klaviyo API Addon is built for deep, flexible integration — working alongside your existing frontend Klaviyo tracking, fully embedded within the Google Analytics 4 PRO extension, and supporting multi-account data distribution.

Hybrid Tracking Support

Ability to track selected events in conjunction with the frontend Klaviyo tracking.

Logged-In User Tracking

Option to track events only for logged-in users.

GA4 PRO Native Integration

Directly and fully integrated into the Google Analytics 4 PRO extension.

Multi-Account Data Distribution

Ability to send data to multiple Klaviyo accounts.

Developer Tools & Targeting Options

Built with developers and marketers in mind, the Klaviyo API Addon provides robust debugging tools, simple setup requirements, and granular targeting to keep your tracking lean and accurate.

In-Depth Debug Logging

Log functionality for in-depth debugging of events sent to the Klaviyo API.

Easy Setup

Easy setup, all that's required is the Klaviyo Private API Key.

Customer Group Targeting

Option to track only specific customer groups.

How Klaviyo API Integration Works

Server-Side Data Flow

Real-Time Customer Data, Captured with 100% Reliability

Customer interacts with your Magento 2 store (purchases, cart updates, product views)

Server-side tracking captures event data with 100% reliability

Secure data transmission to Klaviyo via the official API

Real-time customer data appears in your Klaviyo dashboard

Captures purchases, cart updates, product views
100% reliable server-side event capture
Secure transmission via official Klaviyo API
Real-time data in your Klaviyo dashboard

FAQ

Frequently Asked Questions

What does the Klaviyo API Addon track?

The addon establishes a direct server-to-server connection between your Magento store and Klaviyo's API. It tracks key ecommerce events including product views, add to cart, checkout started, order placed, and order fulfilled — all sent server-side for maximum accuracy without relying on browser-based pixels.

Why use server-side tracking instead of Klaviyo's standard pixel?

Server-side tracking bypasses ad blockers, browser privacy features, and cookie restrictions that can block or limit Klaviyo's standard JavaScript pixel. This means your Klaviyo flows and segments are built on 100% accurate conversion data, leading to more effective email automation and better ROI measurement.

Does this require the GA4 PRO extension?

Yes. The Klaviyo API Addon requires the WeltPixel Google Analytics 4 PRO extension as its base. The addon extends GA4 PRO's server-side infrastructure to also send events to Klaviyo's API, sharing the same reliable data pipeline for all your tracking integrations.

Does it replace Klaviyo's native Magento integration?

It complements rather than replaces Klaviyo's standard integration. The server-side addon ensures complete event data reaches Klaviyo regardless of browser conditions, while Klaviyo's native integration handles catalog syncing, email template rendering, and flow management.

Which Magento editions are supported?

The addon is compatible with Magento Open Source, Commerce, and Cloud editions. Like all GA4 PRO addons, it integrates through the shared server-side tracking infrastructure and works identically across all Magento platforms.

How does this improve email marketing ROI?

With 100% accurate event data, Klaviyo's flows trigger more reliably (abandoned cart emails fire for every actual abandonment), segments are more precise (based on complete behavioral data), and attribution reporting reflects true conversion rates. This eliminates the data gaps that undermine email marketing effectiveness.

Specifications

Technical Details

Latest Version: 1.16.1
Last Updated: March 6, 2026
Release Date: Mar 6, 2026
Support: 12 Months Included Support, with options to extend
Refund Policy: 30 days, for any reason
Platform: Magento Open Source, Magento Commerce, Magento Commerce Cloud B2B

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12 Months Included Support, with options to extend

User Guide

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