Today I got a "Sorry, we missed you" slip in my mailbox. Under the recipient name, the post office employee wrote only my last name. At first I thought it was a package, I order a lot of stuff online (mostly eBay), and once in a while a seller will want to be a pain in the ass and require a signature for some non valuable item. But I have not ordered anything, not have my parents. It's certified mail, just a letter. We can't think of that it would be, and my curiosity is driving me nuts. If I called and asked the post office who the sender is, would they be allowed to tell me?