Since you're doing e-mails couldn't you just send to all of them? I've done that with some cheerleaders here in the U.S. I've only gotten back a few but it might be different for you since you're asking for something that's specifically designed to be sent to the fans. Good luck.

Hey,
I've decided to start collecting fan packs (Stuff sports teams give away to fans for free), though I dought I'll get many of my US team requests as I'm from Australia, but anyways,
does anybody know any European Soccer teams that send out fan packs for me to send emails to?
Thanks, GKgunners