Set Up Your Klaviyo Integration

Who gets this? Shops on all Postscript plans have access to this feature. Learn more about Postscript Plans.

Postscript integrates with Klaviyo, allowing you to send information between both applications.

Klaviyo is an automated marketing campaign solution that focuses on email, social advertising, and analytics. By integrating Klaviyo with your Postscript account, you can:

In this article, we'll walk you through how to set up your Klaviyo integration by first locating your Klaviyo API keys, then how to enter that information in Postscript. Lastly, we'll share some resources for optimizing the integration. 

Locate Your Klaviyo API Keys


  1. Select your Shop Name in the lower-left corner of your Klaviyo dashboard, then select Settings.
  2. Select API Keys. Then locate your Public API Key. You'll want to make note of or write down your Public API Key—you'll enter this in Postscript later.
  3. Select the Create Private API Key button.
  4. Name your API Key (we recommend naming this key something containing "Postscript" so that you can easily reference it in the future).
  5. Select your access level. In order for data to properly flow to and from Postscript, please select Grant applications full access for every API scope. Learn more about Klaviyo's API scopes here.
  6. Select the Create button in the upper-right corner, then select the Copy Key button to save your Private API Key to your clipboard so you can easily enter this in Postscript later.
   Important: To ensure proper data flow from Postscript to Klaviyo, Klaviyo access level needs to be set to Grant applications full access for every API scope.

Enter Klaviyo Information in Postscript (63).gif

  1. Select Apps in the side menu of your Postscript dashboard.
  2. Locate and select Klaviyo. You can scroll to locate it or use the search field at the top of the Apps page.
  3. Enter or paste your Private API Key in the Klaviyo API Key field.
  4. Enter or paste your Klaviyo Public API Key in the Klaviyo Public API Key field.
  5. Select Save Integration in the top-right corner of the page.
  6. Once these details save, select the Enabled toggle so it turns green.

Before You Go

  • When collecting subscribers using a list growth integration, subscribers will be prompted with a "Reply Y to Subscribe" text to confirm their opt-in. This allows your shop to confirm they are a valid, consenting subscriber. This Reply Y interaction is automatic and cannot be disabled.

Additional Resources

Postscript's integration with Klaviyo is robust, allowing you to streamline your marketing messaging strategy. We've linked to additional content below to help you navigate our integration.

Get Support

Have questions? Please feel free to reach out to our wonderful Support team at or via live chat. You can also submit a support request here!

Need ongoing channel strategy guidance? Please fill out this form and we'll connect you to one of our certified partners.

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