The WYSIWYG "Email Message"link allows you to link to an approved or previously sent message from an email campaign. You can also provide a "View Message" link from the WYSIWYG Email link list. Either allows someone to look at the email message on your site as if it were a web page. When a user clicks the link, s/he will see your email message, stationery and all, inside your site's General PageWrapper. This often has a "double header" effect that you may prefer to simplify.
To remove the PageWrapper from the email, you can change the URL for the link to the email by adding &printer_friendly=1 to the end of the link.
For example, for a page to be shown without the wrapper, change: