To get a Klaviyo API key, open the Klaviyo settings page here.
Copy your Public API key into the Promolayer dashboard.
Click ‘Create Private API key’
Click the eye icon next to the newly created key to reveal it. Copy the whole key into the Promolayer dashboard.
If you cannot access this page or the API key area is missing from settings you might not be an account administrator. Please contact the administrator of your Klaviyo account and have them provide both the public and private keys to you.