Setting up a Klaviyo Signup Form
Requires Pro Standard or higher
Click Add Element
Click Form to create a new Form element.
Set Type to Signup, then Via Klaviyo.
Enter your Klaviyo Private API Key, which can be found (or if necessary created) by following these instructions. If you're creating a new key specifically for this form, be sure to give it the Full Access Key access level.
Enter your Klaviyo List ID, which can be found by following these instructions. Note that your list's ID should resemble a string of random upper and lowercase letters (eg.
(Optional) Click the Fields tab and rename or toggle the form's fields.
(Optional) Click the Button tab and change the form's submit button Label.
You're done! The site should now have a fully functional Klaviyo signup form.