To contact Eminem, you can try sending a letter to his fan mail address:
Eminem
Shady Records,
270 Lafayette Suite 805,
New York, NY 10012,
USA
Official homepage at eminem.com
Please note: No fan mail is guaranteed to reach Eminem.
And that’s a nice way of saying “don’t bother” unless you can accept that he might never see it. Let’s be real, chances of getting a reply from EMINEM are SLIM to none. It’s really not all that hard to understand this, considering that Eminem most probably gets about… umm… I don’t know… at least a thousand (?) fan letters every day and at least tenfold that amount of fan emails… you do the math.
You’re free to try but don’t get your hopes up and don’t be disappointed should you not receive a reply. He’s only human and his day is just like ours, only 24 hours long.