How to change out a mailbox lock

DEAYOU Wall Mount Locking Mailbox - Secure Outdoor India mailbox with slot and lock Minimal and nearly indestructible, this sturdy steel mailbox may be easily wall or post-mounted • Crafted from heavy-gauge galvanized steel • Durable mailbox drop slot slot into the first compartment and held therein until the top panel of the mailbox is unlocked and the contents of the compartment removed E -62 58 52

mailbox slot in wall locked mailbox? I live in condos and that happens once in a while If I find someone else's mail, I stick it in the slot beside their mailbox