Locked Mailboxes and Mailbox Keys - FAQ

tl;dr: Adding a lock yourself may not be legal, but you can buy a USPS-approved mailbox with a lock The box will need a mail slot or similar,

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locked mailboxes with slot SAFE & SECURED: The anti theft mailbox comes with a built-in combination lock, and the mail slot cannot be pried open In addition, the anti-fishing design will

locked mailbox with slot Locking Security Mailbox Extra Large Wall Mounted Mailbox or Payment Dropbox Item