Hi @Maxwell, welcome to the community!

If you want to link an existing HTML Form to a Klaviyo List, you can use these form properties in your form code to direct subscribers to your specified List:

<form id="email_signup" action="//manage.kmail-lists.com/subscriptions/subscribe" method="POST">
  <input type="hidden" name="g" value="LIST_ID_HERE">
  <input type="email" value="" name="email" id="k_id_email" placeholder="Your email" />
  OTHER_FORM_CONTENT_HERE
  <button type="submit">Subscribe</button>
</form>
<script type="text/javascript" src="//www.klaviyo.com/media/js/public/klaviyo_subscribe.js"></script>

Note the action value, hidden value with your LIST_ID, etc. There’s more information about that documentation here:

• How to redirect existing sign-up forms to Klaviyo

However, if you may want to consider an embedded Klaviyo Signup Form and embed it into your Site instead since the Klaviyo Signup Forms have more features and capabilities such as A/B Testing, detailed Analytics, and targeting features and capabilities.  

Here’s more information about using Klaviyo’s native Signup Form feature here:

• Getting started with sign-up forms

Hope that helps!

How do I find my List_ID? Do I just put in the name of the list? Is that the only place I need to update the form with my personal content?

Hey @Maxwell,

A List_ID would not be the same as a list name. I would recommend taking a look at our How to find a list ID Help Center article on how to find this. 

David

@retention, would you be able to note the things in the script you provided that I need to fill in? As someone who doesn’t write code, your instructions might as well have been given in a foreign language