Unbounce Email Verification Integration

Use JS Widget to quickly and easily integrate DeBounce real-time email validation into your Unbounce fields.


JS Widget can easily integrate into your Unbounce forms and validate your emails prior to form submission.

What do you need before starting?

  1. DeBounce public API key
  2. Unbounce account
  3. An Unbounce page that includes a form. Click here if you do not know how to create an Unbounce page/form.

Here is a step-by-step guide on how to integrate DeBounce into your Unbounce forms.

Creating a public API key

Navigate to and create an API key, then copy the public API key.

Next, you need to add your domain URL to the approved domains list. This is a security factor that only enables the widget on your specific domain. Click on "CORS Domains" and add your website address. Please note that the CORS URL must follow these rules: 1) It is not sensitive to HTTP and HTTPS; 2) It is sensitive to www and non-www; 3) If your webpage is on a subdomain, you must add the subdomain too; 4) You must enter the root URL of your webpage. Some possible examples:,,

Adding Public API into JavaScript Code

Add your public API key into the following code. The integration code is now ready. You only need to add it to your Unbounce page.

<script type="text/javascript">
DeBounce_BlockFreeEmails = 'false'; //Set this value true to block free emails like Gmail.
<script async type="text/javascript" src=""></script>

Insert the JavaScript Widget into Unbounce

From the page edit screen, click JavaScripts in the bottom-left of the screen. This will open the Manage Scripts window.

In the Manage Scripts window, copy the HTML snippet from DeBounce. Make sure that Placement is set to Before Body End Tag. Click Save Code to continue.

Once your page is saved, your DeBounce widget can start verifying emails.

Please note: The JavaScript widget will only validate emails on the preview or live version of the Unbounce page, not from the editor screen.

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