郵便は昼前に来る。

mail service; postal service; mail; post; mail; postal matter; postal items

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

forenoon; just before noon

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

to come (spatially or temporally); to approach; to arrive; to come back; to do ... and come back; to come to be; to become; to get; to grow; to continue; to come from; to be caused by; to derive from; to come to (i.e. "when it comes to spinach ...")