I am trying to add a retina image in my responsive email template.
I've tried adding a set pixel width on the image (minus the px - (width="450" height="400") as well as a media quiery with set width: .deviceWidth {width:400px !important;}

I have a top header logo that this works on in outlook as well as android.
But the main body image will not work in android with this fix - if I remove the fix it will work
not work in outlook.

Does anyone have any suggestions for me to try to get the logo and main image RETINA to work in
the email clients?