title: Developing HTML email newsletter, refreshing Apple Mail
body: <p>I'm developing an HTML newsletter system using PHP &amp; PEAR. It sends out the emails fine.</p>
  
  <p>However I cannot force Apple Mail to reload images from the server. I have tried:</p>
  
  <ul>
  <li>Restarting Mail</li>
  <li>Clear ~/Library/MailDownloads </li>
  <li>Clear ~/Library/Cache/Mail</li>
  <li>Empty Safari cache</li>
  </ul>
  
  <p>Does any one know where Apple Mail caches the images ?</p>