Log in to your Klaviyo account and click your profile dropdown in the upper right and then Account.
In your account options, click the Settings dropdown and then API Keys.
On this screen, you'll need to note the values under Public API Key and Private API Key to add in to Blocks Edit. If there isn't a Private API Key already available, click the Create Private API Key button.
Finishing up in Blocks Edit
In Blocks Edit, next to your organization at the top, click the integrations icon (). Note: You’ll see the integration option only if you are an admin or owner on the account.
Click the Add button next to Klaviyo.
Here you’ll just need to add in your Klaviyo API credentials.
Click Save to save your credentials.
Template access settings
You will need to enable your integration for each template that you want to allow using as a source for exporting your emails. You can do this in the dashboard by clicking on the preferences icon () on the right side of a template title.
Note: you will need to be an admin or owner on the account to have access to these settings.