Integrate with Klaviyo
Updated over a week ago

You can integrate your account directly with Klaviyo.

An integration between and Klaviyo does three things:

  1. Automatically sends contacts acquired in your account to Klaviyo, into a list of your choosing.

  2. Automatically suppresses existing contacts in your Klaviyo account.

  3. Ability to set up custom filters to sync filters (ie, send leads from different domains to different lists or ESPs).

What you'll need

1. Your API Key. Find this in your Klaviyo dashboard. Click your name/photo in the bottom left and then click Settings.

2. Click API Keys from the top, and then click Create Private API Key.

3. Give the Private API Key a Name, and click Full Access Key. Then, click Create in the top right.

4. Click to Copy Key.

Note: We automatically create a list named 'Retention' in your Klaviyo account, which you will use to sync the contacts we collect for you.

To get started

1. Click on Integrations from the left navigation panel in Then, click Available Integrations at the top and choose the Klaviyo icon:

2. Activate Grow and Reclaim, enter your API Key, and then click Connect.

3. Set up your Contact Suppression. Once you enable automatic suppression, will sync your regular, opt-in list from your ESP and add it to your suppression list. This prevents you from paying for contacts you already have. Once you’ve enabled this option, the sync will run daily at 6 p.m. EST. Yes is selected by default. Click Next.

Daily contact suppression: This action will load all of your contacts from Klaviyo into your suppression list and will automatically import new contacts every day into your suppression list.

4. To upload your collected contacts, select Yes. Choose the Retention list from the drop-down menu. Then, choose whether you want to enable custom sync options.

If you check the box to enable custom sync options, that will display five options: filter by email domain, full or portion of a landing page URL, landing page domain, state*, and referrer URL.

*Note that State is only an option to filter by if you're on a legacy plan that includes address data.

This feature allows you to filter your contacts before you send them to your ESP. For example, you can send all contacts who hit different landing pages to separate lists.

Email domain: This field auto-fills/populates with email domains (ex. Gmail, Yahoo Mail, AOL, etc.) from your collected contacts.

Full or portion of a landing page URL: If you’ve put the script on several pages or the entire site, this field allows you to pull out contacts who have only hit Landing Page A or Landing Page B. This option does not auto-populate, so you will have to add in the exact URL.

Landing page domain: If you added script to both and, for example, the landing page domain would be either or This field will auto-populate.

State: This filter allows you to pull out only contacts from one or more states. Note that State is only an option to filter by if you're on a legacy plan that includes address data.

Referrer URL: This is the URL the contact comes to your site from.

When you're finished, click Next.

5. Select the Revenue Metric you are using in Klaviyo. This is used to report revenue generated from R! leads in your dashboard.

**If you are using our Shopify app, you do not need to make this selection. This is specifically for non-Shopify platform revenue reporting.**

6. Turn on your Reclaim event sync by toggling to Yes. Click Next.

7. Enable the integration. Once you enable the integration, your suppression and collection sync settings will apply and begin. Then, click Finish.

8. Once the integration is complete, you will see the integration date, API details, and all other setting details from the Settings page. You can also Remove the integration from this page at the top.

Integration Settings

From your Integration settings, you can access, change, or update any of the following:

  • Your API key

  • Grow or Reclaim Activation

  • Suppression settings

  • Grow Sync settings, including the list you're syncing contacts to

  • Revenue metric

  • Sync summary

  • Reclaim sync

To access any of these settings, click Integrations > Dots > Settings.

Sync summary

You can view your daily sync history under Sync Summary on your integration's settings page. It will show you the date, number of completions, if there are any failures, and the number that are in the queue.

To access all of your sync history, click on a specific date or View Full History under Sync Summary. If there's a failure, it will show the email address, what type of failure has occurred under ESP Feedback, and the date and time of the failure.

If you have questions about any error messages you see here - or anything else for that matter, you can contact support at support[at]retention[dot]com!

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