The United States Postal Service (USPS) picks up outgoing US mail at 4 p.m. For any last minute Express pieces that you may have to go out, be sure to drop them off by at least 3:55 p.m. to allow for processing.

Also, does mail get picked up everyday? For most post offices yes this is true. Mail may be picked up twice a day, but its only sent out to the regional processing center once a day, usually around 6-7pm.

Then, do the blue mailboxes get picked up?

Any pick up for a blue mail box MUST happen AFTER the scheduled collection time shown on printed label. Depends on mail volume deposited due to density of population or business areas, through statistic record, some blue boxes are scheduled to be collected two times or more a day.

Does mail get picked up on Saturday?

Yes, USPS delivers on Saturday. Though USPS delivers on Saturdays, the delivery is subject to the service or mail class in use. Priority Mail and Priority Mail Express items might be delivered on Saturdays. However, the delivery of a first-class mail, media mail products, and standard post isnt specified.