I was using the following conditional statement to hide content in Outlook for responsive HTML emails,
<!--[if !gte mso 9]><!-- -->
<!--<![endif]-->
but, I am testing right now, and it does work fine for the Outlook app, but Outlook.com hides all content following this code. I was using it to hide the pre header at the beginning of the body content, but that resulted in a blank email. I am testing using my own outlook.com account and Litmus, which shows a blank email in all major browsers.
Anyone know of another technique to hide content for Outlook without breaking Outlook.com emails?
After more testing I found that this works in Outlook app and Outlook.com:
<!--[if !mso 9]><!-->
<!--<![endif]-->
I don't know if it was the "gte" part, but looks to work better with that removed.
Thanks for the responses.