I have searched the forums, but everything seems to be about the HTML email layout, or the text email CONTENT.

What I need to do is modify the LAYOUT of the TEXT emails - not the content.

The text emails seem to be contained in a fixed-width div because the text does not span the width of the screen and this is causing issues with line breaks.

So...

Where can I edit the LAYOUT of the text emails? Thanks in advance!

The mails I am most concerned with are the Order Confirmation email, the Order Update email and the Registration Confirmation email.