Gen-3 M series keys are to be used with Mail Boss mailboxes that have wafer disc locks and manufactured in 2023 or later. We need to know the 5 digit “key number” that starts with M.
For example, please enter M0515, M1043, or M1267
Please...
Reviews
4.8
111 ratings
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The mailbox works as one would expect. The keys also operate the lock just fine. The offset hole for the keyring is novel but not practical. I'm going to drill centered holes so the key 'behaves' like other keys on my ring.
S
SD · July 8, 2026
Exquisite love the Mailbox and keys that came with it. I did hade to order a 4th one for my son it was fast and no problem delivering it. I did recommended it to myfriends .
R
Raymond · June 19, 2026
Thank goodness replacement keys are always available. I lost another one while plowing on the tractor! Maybe it will sprout and grown a new one someday.