<html>
    <head>
        <!-- This matches the default MobileMail viewport on iOS -->
        <meta name='viewport' content='width=375, initial-scale=-1'>
    </head>
    <!-- We need a large height so that WebKit doesn't inflate the scale
         to ensure that the web view is vertically covered by content.  -->
    <body style="height: 10000px;">
    </body>
</html>