Contacting Joshua Jackson
Unfortunately, Josh does not have a personal email or address that he can give out to his fans. He does not have Facebook, MySpace, etc. So, if you come across someone on those type of sites claiming to be Josh, they are fake. Josh's personal life is pretty private and I think he takes a lot of pride in keeping it that way.
If you are interested in sending him mail, please send all correspondance to:
Joshua Jackson
c/o The William Morris Agency
One William Morris Place
Beverly Hills, CA 90212
Please know that Josh does read mail sent to him, however, to be fair to all of his fans, he does not respond to fan mail. But I know he appreciates all the support from his fans.