While in the process of doing some HTML emails recently I had some issues with Outlook. Stinky, sneaky Outlook. I learned a few little techniques though that are worth sharing. Only show this on Outlook First and foremost, only show the content between the conditionals on Outlook. <!--\[if gte mso 9\]></pre> <div class="only on outlook"></div> <!\[endif\]--> Don’t show this on Outlook (v1) Anything with the style mso-hide: all will be hidden on Outlook.