ADJ.
near, painted, red
VERB + MAILBOX
am, check, checking, see, written
MAILBOX + NOUN
day
PREP.
about, along, around, in, into, on
ADV.
somewhere
noun
A box into which mail is placed.
She waved back, placed a stack of envelopes in her mailbox, and lifted the red flag.
A folder or account for the storage of email; an electronic inbox or mailstore.
noun — public box for deposit of mail
I looked about for the mailbox.
Where is the mailbox?
Put this stamp on the postcard and drop it in the mailbox.
Is there a mailbox near here?
There is a mailbox somewhere along this street.
i Register
In some senses, mailbox is marked as US. Watch for register when choosing this word.