The mailbox is an extension of your house. Even though not many people pay attention to it, it serves a very important role. The mailbox, for instance, holds very sensitive information that is sent to you on a regular basis. The last thing you want is someone to snoop on it. Well, you dont have to worry about this with a USPS approved locking mailbox. The mailbox is first of all very secure. You can sleep well at night knowing that your mail is safe. In addition to this, its a huge upgrade compared to your average mailbox.