Answer
Jul 21, 2026 - 01:12 PM
A USPS approved mailbox lock is a lock that meets the United States Postal Service's security standards for mailboxes, particularly for cluster and apartment mailboxes. These locks are typically installed by the property owner or manager, but only USPS postal employees have the master key to access the mailbox for mail delivery. The lock must comply with USPS regulations to ensure the security and privacy of mail.
