GTM manages the
<script> tag only. The mmWrapper placeholder div still needs to be added directly to the landing page template.1
Create the landing page
Create a dedicated page on your site for referral promotion links (email, social, etc.) to land on.
2
Add the wrapper div
3
Set the trigger
Because this page has no other data to pass, you can trigger directly on a Page View trigger scoped to the landing page URL - no data layer push is required.
4
Create the Custom HTML tag
locale dynamically instead of hard-coding en_GB. Test against tag-demo.mention-me.com before switching to tag.mention-me.com.5
Preview and publish
Confirm the tag fires only on the landing page URL, then publish.