Email is adding extra lines / box that messes up formatting

[veronicathecow]

Hi I think this issue has arisen since an update.
Using Kompozer I make the code and then paste in to the email system and it looks fine.
When I then send the email the system adds extra code that includes "Copyright (c) 2014 Zen Cart. Powered by Zen Cart"
It also has a box and as this is smaller than the email we are sending it makes a line down the middle of our email.
Is there anyway to stop it doing it or can someone tell me which file I need to hack to sort it

Many thanks. Tony

[veronicathecow]

I managed to track it down to public_html/email_template_default.html