In plain English
It is the physical key intended for one specific mailbox. The important point is that it matches that mailbox, not mailboxes in general.
In context
Here, it names the key made to open the property's mailbox.
- Situation
- Managing move-in, move-out, inventory, keys, deposits, and condition reports
- What it communicates
- labels the access key for the property's mailbox.
Meaning limits
The term alone does not say who has the key or whether it is the only key for that mailbox.
Examples
“The landlord gave her two keys: one for the front door and a mailbox key for her box downstairs.”
“When you move out, leave the mailbox key in the kitchen drawer.”