How to upload existing Magento 2 subscribers to a Klaviyo list

How to upload existing Magento 2 subscribers to a Klaviyo list

Estimated 1 minute read

Updated Aug 29, 2025, 12:00 AM EST

Table of contents

Overview
Uploading existing newsletter subscribers for Magento 2

Overview

Our Magento 2 integration documents cover syncing a Magento sign-up form to a Klaviyo list for any future subscribers. This article covers uploading any existing subscribers to your Klaviyo list.

You can also sync customers at checkout for both email and SMS with Magento 2; however, that is not covered here.

Follow Adobe's instructions to export newsletter subscribers as a CSV file. Include only subscribed contacts for the website, store, or store view you want to import.

Prepare the CSV with a header row. Label the email address column Email or Email Address. You can also include first names, last names, and other profile properties.
Follow our guide to importing contacts from a CSV file (https://help.klaviyo.com/hc/en-us/articles/115005078487#section2) to upload your existing subscribers to the Klaviyo list you want to sync your Magento sign-up form to.

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