The code that I am referring too is the template code that is marked up in light grey font that is just after the Doctype and also near the close body tag and also right at the end of the document.
This code seems to be added everytime you enter into the UE4 wizzard and click to edit the email using Dreamweaver then save it. So if you edit it three times, three lots of template code is added.
I have seen another mention of this happening in this forum.
Hope it helps