usps

USPS tracking gaps of 2-3 days are normal because packages are not scanned at every stop; act once the expected delivery date passes or 7 days after mailing.

USPS delivers 8 AM to 8 PM, Monday through Saturday. Priority Mail Express takes 1 day, Priority Mail 2-3 days, Ground Advantage 2-5 days.

USPS bans some items outright — marijuana, gasoline, explosives — and restricts others with conditions. Lithium batteries, liquids, aerosols, and firearms each have specific rules. Publication 52 is the authoritative source.

Click-N-Ship prints prepaid USPS labels at commercial rates, up to 20% below retail, with no monthly fee. How it works and when to use it.

USPS closes 11 federal holidays in 2026. No carrier delivery, no post office counter service. Priority Mail Express is the exception — it delivers on most holidays.

USPS targets 5 PM — in practice, carriers run to 8 PM on regular days and 9 PM during peak season. Priority Mail Express is the only service with a guaranteed delivery time.