title: Mailchimp: how to show an article if user has no preferences
body: <p>Is something like this not possible with a wildcard? I'm trying to send an article to people who do not have any preferences, and if they do have preferences don't show it.  I cannot find any documentation on it.</p>
  
  <p>Thanks in advance</p>
  
  <pre><code>*The star means all groups
  
  *|INTERESTED:*|*
  
     //Do nothing
  
  *|ELSE:|*
  
    //Show all
  
  *|END:INTERESTED:|*
  </code></pre>