In this article, we’ll see how to integrate Klaviyo into Retainful.

You can integrate Klaviyo into your Retainful account to automatically transfer the email addresses captured by Retainful into your Klaviyo list.

Note: This integration feature is exclusively available for all our paid customers.


  • 1. A Klaviyo account

  • 2. A mailing list in Klaviyo

Integrating with Klaviyo

Step 1: Navigate to your Retainful dashboard -> Integrations -> Klaviyo

Click ‘Connect’, this will prompt a popup, where you’ve to enter the API key.

Retrieving the API key from MailerLite

A popup menu for credentials will be prompted.

Step 2: You have to enter the API key in the following menu.

Enter the Klaviyo API Key and click Connect.

3. You can click ‘Find your credentials here’ which will redirect you to Klaviyo, where you can retrieve your Key.

After successfully integrating Retainful with Klaviyo, you can start setting up automation to engage with your customers. Follow these steps:

Step 3: Set Up Automation Blocks

  1. Navigate to the Automation section in Retainful.

  2. Choose any of the automation you want to integrate with Klaviyo to add customers to your Klaviyo list then click Edit Flow.

  1. It will take you to the automation workflow.

Select Add Block after the first email and choose Integration. Although you can set the integration at any stage, we recommend doing it after the first email.

Here’s why: If the block is added post-trigger, all customers, including those who might recover their carts within an hour, are added to the list. So, placing the block after the first email ensures that even customers who’ve still abandoned their carts will get into the list.

  1. Click on the Integration block and choose Klaviyo to configure.

5. Select the Klaviyo list where you want to add your customers.

6. Click Save to apply the changes.

Note: Only one list can be added per block. If you need to add another list, you will need to create another block and add the list there.

That’s it, you’re done, you’ve successfully integrated Retainful with your Klaviyo account.

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