I've actually ran into a handful of sites that were based outside of the U.S., and I don't think I've seen any that wanted postal only sub. Are you looking for a very specific Genre? (Fantasy, Urban, Realist) or are you just looking to publish a novel? I think looking to sell a novel or being really specific could limit your search results a good bit.
Don't sell novels and don't be specific? I'm not sure I follow.