Is it legal to put a lock on your mailbox?

Wall Mount Lockable Mailbox Outdoor Galvanized Metal for Key mailbox with slot and lock The steel mailbox features a locking hinged door for security It features a top slot that measures 10 12 x 34 Mailbox is wall mailbox door slot CONVENIENT SUGGESTION BOX with SLOT: The top of the suggestion box features a wide slot to accommodate ballots, mail, money or checks with ease Great as a

mailbox drop slot near me Your mail carrier will put packages in the mailbox using the delivery tray The rest of your mail your carrier will put through the narrow slot This makes