One of our mailbox parcel lockers needs a new key. Seems easy enough but the post office has been working on this for months. Turns out our parcel locks are outdated while our individual mailbox locks are ok. Our mailboxes are 17 years old. They don’t need to be replaced yet, but it is something to consider if the post office is unable to replace or fix the broken key. Because our mailboxes are considered federal property, we are not allowed to fix it ourselves.