I want to follow up Oudin's post.
First off, it doesn't e-mail the tracking ID (when you press send in the orders panel) when this plugin is enabled. It freezes on "sending..". When I deactive this plugin, it does work.
Secondly, what exactly should my template contain? According to your .gif I need to make a wpsc-email_style_tracking.php in my themefolder. I did that, but because the plugin is activated, it won't send anything.