How can I create a Facebook Lead Ad that connects to my Klaviyo audience?

Hi @Fanny 

Thanks for sharing your question with us! Would love to help you solve this issue. 

When creating Leads Ads that sync back to Klaviyo, it is imperative that you first have your Facebook integrated with Klaviyo and then sync your Klaviyo list with your custom audience.

Once you, sync your lists and segments with Facebook Audiences. Klaviyo pushes email addresses to a Facebook Audience in a one-way sync.

Data is synced between Klaviyo and Facebook Audiences in this way:

• Klaviyo pushes email addresses to a Facebook Audience. 
• Only email addresses associated with a Facebook login will be synced, so the size of your audience may not exactly match the size of your list/segment.
• As profiles are added or removed from the list or segment, they will also be added or removed from the Facebook Audience.

Our Help Center documentation on How to Review and Understand your Facebook Integration Data will walk you through this process further to gain further insight.

We also have an Academy course that will help you integrate owned marketing with your facebook advertising strategy and explain how to create custom and lookalike audiences for Facebook while using Facebook Ads and Klaviyo together that is complete with explanatory videos! 

If you run into further issues with your Facebook Leads Ads, I would check out this helpful post in the Community for potential solutions and continued learning.

Thanks for participating in the Community! 

-Taylor