I want to create an email with a signature that contains an external image. For example, I would like to always include my SuperUser flair in my signature like so: http://superuser.com/users/flair/53525.png

This can be done if I insert an image and select the above source. The problem occurs when I copy the image and paste it into the body of a new email. Outlook creates an embedded version and breaks the link to the original email.

How can an image be pasted into Outlook and NOT be embedded (ie: the link to the original image is maintained?)