You would have better luck posting this in the "Is This Address Up To Date?" forum. I personally got Stan through Cap 2 VV, so I can't speak for his official address, but I'd try the other forum instead :)

Hi everyone!
I'd love to write to Sebastian Stan, but there are two addresses on the site and it's confusing. The last success was in 2012 and probably these addresses aren't valid anymore.

So I'd be really greatful if anyone could provide a valid address of this actor {??}