There are a couple of cases where the destination address is valuable to ensure that the package is delivered to the right person. 1. Particularly in apartment

There are a couple of cases where the destination address is valuable to ensure that the package is delivered to the right person. 1. Particularly in apartment buildings where postboxes are next to each other, the slip may not be placed in the correct box. If I receive a slip that's intended for a neighbor, it would be helpful to know the correct address (since I probably don't know all my neighbors' names) 2. If the address is my address but not my name, then it's either a mistake by the sender or it's intended for a former resident, and I can inform USPS. If the address wasn't on the slip, I would just assume it was meant for a neighbor.