title: openX Ad server not displaying the banner in email body
body: <p>i have created a banner in openx and linked it with zone. Type of zone is Email/Newsletter zone and get its invocation code and paste its code in email body but i don't get banner in email body at receiver end. It gives error showing all invocation code instead of banner</p>
  
  <p>Email Body :-</p>
  
  <pre><code>&lt;htm&gt;
      &lt;body&gt;
          &lt;a href='http://mysite/openx/www/delivery/ck.php?zoneid=9' target='_blank'&gt;
              &lt;img src='http://mysite/openx/www/delivery/avw.php?zoneid=9&amp;amp;cb=452745' border='0' alt='' /&gt;
          &lt;/a&gt;
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>i have also used simple php mail function to send mail.</p>