USPS delivery policy is the set of rules for when, where and how the Postal Service delivers. Regular delivery runs Monday through Saturday, each mail class has a published delivery window (1–5 days for First-Class Mail, 2–5 days for USPS Ground Advantage), and only Priority Mail Express carries a money-back guarantee. Items that can’t be delivered go to the Post Office and are returned to the sender after 15 days.
Below, each part of that policy is broken out with the official USPS source: delivery days, service standards, where carriers leave packages, what happens after a missed delivery, and the tools you can use to change any of it. Quick answers to other common questions are on our USPS frequently asked questions page.
What Days and Hours Does USPS Deliver?
USPS delivers mail and packages Monday through Saturday. In many areas packages also arrive on Sundays, and USPS offers Sunday and holiday delivery of Priority Mail Express in many major markets for an extra fee. There’s no regular delivery on federal holidays. Our USPS holiday schedule lists the dates.
There’s no single delivery hour. A carrier’s route, the day’s volume and where your address falls on the route set the time, so most mail arrives between mid-morning and early evening and peak-season deliveries can run later. Our guide to what time mail gets delivered explains typical windows and how to see your carrier’s pattern.
What Are the USPS Delivery Standards for Each Mail Class?
Each USPS service has a delivery window, which USPS calls a service standard. It’s measured from the day the item enters the mail. Except for Priority Mail Express, these windows are expected delivery times, not guarantees. The table uses the windows USPS currently publishes on its Mail and Shipping Services page.
| Service | Delivery window | Guarantee | Tracking | Included insurance |
|---|---|---|---|---|
| Priority Mail Express | 1–3 days | Money-back guarantee | Included | Up to $100 (most shipments) |
| Priority Mail | 2–3 days | None (expected date only) | Included | Up to $100 (most shipments) |
| USPS Ground Advantage | 2–5 days | None | Included | Up to $100 |
| First-Class Mail (letters, flats) | 1–5 days | None | Not included without an extra service | None for letters |
| Media Mail | 2–8 days | None | Included | Available to buy |
Distance matters within each window. Mail between nearby ZIP codes lands at the short end, cross-country mail at the long end, and Alaska, Hawaii and offshore destinations can take longer. For estimates for a specific route, see our guide to USPS business days and transit times. If you’re choosing a service, compare live USPS and UPS rates for the same package in the ParcelPath rate calculator.
Where Will a USPS Carrier Leave Your Package?
Mail goes into the address’s authorized mail receptacle. Under the Domestic Mail Manual, section 508, customers must provide an approved mailbox or door slot. Packages that fit go in the mailbox or a parcel locker. Larger packages that don’t need a signature are usually left in a safe spot at the door, porch or front desk, and the delivered scan records the spot.
Items that need a signature, such as Certified Mail, Signature Confirmation, Adult Signature and some Priority Mail Express, are never left unattended. If nobody is available to sign, the carrier leaves a notice and takes the item back to the Post Office. To choose where packages go, use USPS Delivery Instructions from the tracking page. It lets you name a specific spot, authorize a neighbor or have the item held at the Post Office.
What Happens When USPS Can’t Deliver?
The carrier leaves a notice, and the item waits at the local Post Office. You can schedule a free redelivery online or pick it up with the notice and a photo ID. DMM 508 sets the holding period: an unclaimed item goes back to the sender after 15 days, or 5 days for Priority Mail Express. A sender can choose a shorter period.
Undeliverable mail, such as a bad address, a refused item or an addressee who has moved without forwarding, is returned to the sender with the reason marked. Our guide to USPS return to sender procedures explains each endorsement. If tracking stops before delivery, see our guide to locating missing USPS packages.
How Do Tracking and Delivery Confirmation Fit the Policy?
Tracking is part of the service for Priority Mail Express, Priority Mail, USPS Ground Advantage and Media Mail. The delivered scan records the date, time, ZIP code and where the item was left. First-Class Mail letters and flats aren’t tracked unless you add an extra service such as Certified Mail. Our explainer on USPS delivery confirmation covers proof-of-delivery options, and our guide to finding and using a USPS tracking ID shows where the number appears.
For a full walkthrough of every tracking status, from acceptance to delivery, see our USPS tracking and delivery guide.
Is USPS Delivery Guaranteed, and What If It Arrives Late or Damaged?
Only Priority Mail Express has a money-back guarantee. If it misses the guaranteed date, the sender can request a postage refund. Every other service has an expected delivery date, and a late arrival doesn’t earn a refund. USPS’s own Priority Mail page says its expected delivery date is not a money-back guarantee.
Loss and damage are covered by insurance. Priority Mail Express, Priority Mail and USPS Ground Advantage include up to $100 of coverage on most shipments, and senders can buy more, up to $5,000. The sender files claims online through USPS, with proof of value and, for damage, photos of the item and packaging.
Which Tools Let You Change How USPS Delivers to You?
USPS gives recipients and senders a few ways to change the default delivery, all from usps.com:
- Delivery Instructions (recipient): leave the package in a specified place, with a neighbor, or at the Post Office.
- Hold Mail (recipient): pause all delivery for 3 to 30 days.
- Redelivery (recipient): reschedule after a missed attempt, or choose a USPS Smart Locker in some areas.
- Change of Address: forward eligible mail to a new address after a move.
- Package Intercept (sender): return a package or hold it at a Post Office before it goes out for delivery.
How Does USPS Delivery Policy Affect Business Shippers?
For sellers, the delivery windows set customer expectations, and insurance and signature options set how much risk you carry. Quote Ground Advantage orders as 2–5 days, add Signature Confirmation to high-value orders so they aren’t left on a porch, and keep proof of value for every insured shipment.
Cost is the other half. ParcelPath is free, with no subscription, per-label fee, minimum or contract, and gives up to 89% off USPS and up to 85% off UPS retail rates. You also get free USPS pickups and printer-free labels through USPS Label Broker. It’s a practical way for a small business to get discounted postage without volume commitments.
Frequently Asked Questions
What days does USPS deliver under its delivery policy?
USPS delivers mail and packages Monday through Saturday, and many areas also get package delivery on Sundays. Priority Mail Express Sunday and holiday delivery is available in many major markets for an additional fee. USPS doesn’t make regular deliveries on federal holidays, so mail sent around a holiday usually arrives a day later.
How long does the Post Office hold a package after a missed delivery?
Under USPS Domestic Mail Manual section 508, an item the carrier couldn’t deliver is held at the Post Office and returned to the sender after 15 days. Priority Mail Express is returned after 5 days. You can pick it up with the notice and photo ID or schedule a free redelivery online during that period.
Does USPS guarantee delivery dates?
Only for Priority Mail Express, which carries a money-back guarantee if it misses its guaranteed date. Priority Mail (2–3 days), USPS Ground Advantage (2–5 days) and First-Class Mail (1–5 days) have expected delivery windows but no refund for late arrival. Insurance up to $100 is included on most Priority Mail, Express and Ground Advantage shipments.
Will USPS leave a package if no one is home?
Yes, if no signature is required. The carrier leaves it in the mailbox, a parcel locker or a safe spot at the address and records the location in tracking. Packages that need a signature, such as Certified Mail or Signature Confirmation, are taken back to the Post Office, and the carrier leaves a notice for pickup or redelivery.
Sources
- USPS: Mail and Shipping Services (delivery windows, tracking, insurance)
- USPS: Priority Mail Express (money-back guarantee, Sunday/holiday delivery)
- USPS: Priority Mail (expected delivery date, insurance)
- USPS Domestic Mail Manual 508: Recipient Services (holding periods, receptacles)
- USPS: Manage Your Mail (Delivery Instructions, Redelivery, Hold Mail)
Part of our USPS Shipping hub.
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