Email with attachment

I'm building a picture gallery which allows the visitor to select items and email the site owner with a list. While the movie can send the list to the email's body, that's not ideal given the range of email clients, and it would be much better to generate a file attachment which could then be used in other order processing routines.

AFAICS Flash won't let me automatically generate and attach the text file - is that right? So I've got to look for other options. As the movie may run in static hosting environments, I can't depend on PHP. What other approaches should I consider?

John