Actually, what I'm going to do is assign a weight to the "email me" option. I already have a code in place that emails me an order if the product has a weight assigned to it (like a physical book) so I know to process the order manually. This way I will only receive copies of the emails which include ebooks I have to mail out to EU customers. I see I can add a weight in the attributes section, so I'll play around with that.

Thanks again for all your help!