Could it be something I did when I copied and pasted the HTML code from the HTML editor over into the message box?
It would have included all the. . .
</body>
</html>
stuff that might have confused your software and blocked it from putting the un-subscribe and tracking code after it.
That could be it. How did you manage to disable tinymce? And get the code entered. I did a test but the tracking appeared with tinymce.
A lot of people are saying that they were unable to see the images. Is there some way of attaching them? Or. . . providing them with an option to receive a PDF instead in their own account management interface on the forum?
This will be the case with a lot of email clients unless the user clicks on the display images link in the message such as the case with gmail. Or if they are in the users address book which might allow the images to be shown.
A pdf/attachment would probably hurt delivery and a lot of people are very wary about opening email attachments.