title: Prevent Gmail Cleansing of Attached HTML
body: <p>I have created a single HTML file that includes its own CSS styling, as well as custom HEAD tags so that it displays in a mobile browser fairly nicely. I then have it working with PHP as a file attachment.</p>
  
  <p>Trouble is this -- Gmail is munging the View of it, but not the Download of it. Gmail is stripping out the CSS and rebuilding the HEAD without my custom viewport stuff.</p>
  
  <p>Is there a programmatic way to code the HTML5 to cause Gmail to fail in doing this cleansing?</p>