Unfortunately, the email address (NCSaturn7@aol.com) you have listed is not a valid email for Nicolas Cage. This was an email address that was posted on the internet some time ago from someone trying to pose as Nicolas Cage. The police were involved and the email was shut down. If it's still working, I suppose someone else has picked up the address. I can assure you it's not Nic Cage .
This would be funny If I will write to Nicolas, and when I will open my mail box next day, there will be an answer. I think that sudden death in my depatrment will be something new!!!!!!!!!!!!!!!!!!!!
Nicolas Cage does not have an official personal address to receive fan mail nor is he big on responding to fan mail-he's just so busy but you could write to some of Nic's publicity squad - they may or may not forward your letters but it's always worth a try and you may get lucky and they may be able to give you more information on an appropriate email or address for Nic: