This definitely has the smell of a scam written all over it as far as I am concerned and I would delete the message. You say you have been out to the site to look at the frame several times a week, they could be phishing (gathering info via the internet from your visits to the site). Even if you think you know who it is, if you don't reply they will say something somewhere along the line to give it away. If it is family, they could ask Nato what you want and ask him to keep it a secret from you. If he is concerned about it, he probably is not involved. Delete and forget it ever arrived is good advice as many have given you. It is amazing what they can pull from the internet browsing and e-mails, so never put anything out there you don't want anyone to see and especially not personal information. When you enter sweepstakes, unless they state that they won't sell your address, you can bet it is sold to a bunch of people for advertising purposes, how do you think the junk mailers get your address, they buy it from someone else.
themachinelady