Referee Tag – Google Tag Manager

This guide covers deploying the Referee tag through Google Tag Manager (GTM) instead of hard-coding it into your checkout template.

GTM manages the <script> tag only. The mmWrapper placeholder div still needs to be added directly to your checkout page template near the coupon entry field.

Add the wrapper div to your page template

<!-- Begin Mention Me referee placeholder div -->
<div id="mmWrapper"></div>
<!-- End Mention Me referee placeholder div -->

Push a data layer event on checkout page load

<script>
  window.dataLayer = window.dataLayer || [];
  dataLayer.push({
    event: 'mentionMeReferee',
    mmLocale: 'en_GB'
  });
</script>

If you have any known customer details at this point (firstname, email, etc.), include them as additional keys the same way.

Create Data Layer Variables in GTM

Create a Data Layer Variable for mmLocale (and any optional customer fields you’re passing).

Create the Custom HTML tag

<!-- Begin Mention Me referee integration -->
<script type="text/javascript"
  src="https://tag.mention-me.com/api/v2/refereefind/YOUR_PARTNER_CODE?situation=checkout&locale={{mmLocale}}">
</script>
<!-- End Mention Me referee integration -->

Test against tag-demo.mention-me.com first, then switch to tag.mention-me.com.

Set the trigger

Create a Custom Event trigger firing on mentionMeReferee, scoped to the checkout page.

Preview and publish

Confirm in GTM Preview mode that the “Been referred by a friend?” link or form renders on checkout, then publish.

Full parameter reference (including the implementation options: link, form, embed) is on the Referee tag page.

Troubleshooting

The referee link doesn't appear

Check that the mentionMeReferee event is present in the data layer before GTM’s trigger evaluates it, and that the mmWrapper div exists in the page HTML (not just injected by GTM).

Single-page checkout / dynamic routing

If your checkout is a SPA and the referee tag needs to re-fire on route changes without a full page reload, see SPA Implementation - the same re-fire logic applies whether the tag is deployed directly or via GTM.

Quickstart Guides

Advanced

Reference

MCP Server

Referee Tag – Google Tag Manager

Troubleshooting

​Troubleshooting

Troubleshooting