What is the preferred lockable single mailbox for postal carriers?

What is the preferred lockable single mailbox for postal carriers? mailbox with slot and lock Black Locking Mailbox or Locking Drop Box mailbox slot in wall Amazon Link to the best mailbox ever! 2wqM9HJ Check out my channel for other

mailbox slot in wall Locking Security Mailbox Extra Large Wall Mounted Mailbox or Payment Dropbox Item

mailbox for door slot 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 slot in the top, like a tiny mailbox Where the paint is nicked, little bits of rust show through The Master Lock that secures the lid looks like it's been