I wrote to them both at the Supernatural address in 2006, I sent a poster each for them to sign but never got anything back.
So yes, take Shambler's advice and don't write to that address lol.

Hi there

Unfortunately, Jensen Ackles only sends PP (preprinted) autographs. Thus, sending your own photos of him to be autographed would not work, as he does not sign TTM.

Jared Padalecki on the other hand, does sign authentically (through his fanmail address, not the Supernatural one), so you can send your own photos to him to be autographed.

Good luck

hey for those who have them ...

when u sent jared and jensen a letter did u put a photo
or!
did u not and they put their own

(so is it better to include my own or expect one from them)

btw who finds their adresses?