This tutorial shows you the key differences between groups and tags in Mailchimp. We cover how to create both groups and tags, how to add your new signup form to your website and how to get your existing subscribers to choose a group so you can send more specific newsletters to your audience.

This is the MERGE TAG to add a link to the “Update preferences” page: *|UPDATE_PROFILE|*

Read more about how to use this MERGE TAG here:
https://mailchimp.com/help/add-an-update-profile-link/