Line-haul is a machine. The final few miles are a person, a route sheet and a schedule that belongs to whoever is holding the parcel.
Why the last leg is the expensive one
Everything before the final stop scales. A trailer between two hubs carries thousands of parcels for one driver and one tank of fuel, and a sorting building moves them by the beltload. The last stretch does not scale at all: one van, one street, one doorbell at a time, with somebody walking up a driveway for a single box. Carriers have spent years trying to make that stretch cheaper, and the answers all take the same shape, which is to hand the sparse, light, low-value packages to a network that is already visiting every address in the country six days a week.
Density decides the cost per stop
Ten parcels on one suburban street cost a fraction per package of one parcel at the end of a rural road. That single fact is behind residential surcharges, delivery area surcharges and every economy tier on the market.
The mailbox is already there
A letter carrier walks your address whether or not your package exists. Adding a small parcel to that route is close to free compared with sending a second vehicle, which is what the economy tiers are buying.
You feel it as days, not dollars
The saving lands on the shipper's invoice; the cost lands on your calendar. An extra transfer between two networks is an extra night in a building, and sometimes an extra weekend.
The two tiers where the last leg can change hands
Both national carriers sell an economy residential tier. Their published wording differs on one detail that matters to a recipient, which is whether the carrier will tell you who finishes the job.
| Attribute | UPS Ground Saver | FedEx Ground Economy |
|---|---|---|
| How the carrier describes it | "a lower-cost shipping option for less urgent packages" | "a cost-efficient shipping option for small and medium businesses" |
| Who makes the final delivery | UPS or the USPS, depending on the locationStated on the service page itself | Not named on the current service pageThe FedEx shipping services developer guide states that the USPS makes final delivery to the residence |
| Days quoted | Roughly one to two business days behind UPS Ground | Typically 2 to 7 business days |
| Delivery days of the week | Not stated on the page | Monday through Sunday |
| Where it goes | Residential addresses in the 48 contiguous states, Alaska, Hawaii, Puerto Rico, U.S. Territories, U.S. Post Office Boxes and APO/FPO/DPONot available for international packages | Weight up to 70 lbs and 130 inches in length plus girth, with 1 to 10 lbs called the ideal range |
| Delivery photo | Only for packages delivered by UPS | Not offered on this tier |
One carrier prints the handoff on the page you are most likely to read; the other keeps it in a developer document. If a page does not name the final-mile company, this site will not guess one for it — what is written above is what each carrier published on 2026-07-28, at ups.com/us/en/support/shipping-support/shipping-costs-rates/ups-ground-saver, fedex.com/en-us/shipping/ground/economy.html, and the FedEx shipping services developer guide at fedex.com/us/developer.
What the handoff does to your delivery date
The quiet stretch is the transfer
Tracking usually goes still for a day or so around the point where the parcel leaves one network for another. Nothing is lost during that gap in the ordinary case, but nothing is scanning either, and the estimate on the screen often stops updating with it.
Weekends behave differently
Once a parcel is riding a postal route it arrives on the postal schedule, which includes Saturday in most places. That can pull an arrival forward or push it back depending on which day the transfer happens.
The last scan may not say "delivered" the way you expect
A handoff often shows as a transfer to a partner, then a separate postal event, then the delivery. Two networks, two vocabularies, one parcel, and no way to tell from the wording alone whether anything is wrong.
Photos and signatures thin out
UPS notes that delivery photo confirmation applies only to packages its own drivers deliver. If proof at the door matters to you, the economy tier is the wrong purchase.
What to do about it, on each side of the transaction
If you are waiting for an order
Check the address type first. A PO Box, a military address or a rural route means the postal network was always going to finish the trip, whatever brand is on the label. After that, give a stalled transfer one business day before writing to the seller.
If you are the one shipping
Buy the tier that matches the promise you made. Light and cheap and nobody waiting on it goes on the economy service; anything with a date attached to it goes on the tier the carrier delivers end to end, and the difference is usually a couple of dollars.
Quote both before you decide
Run the box and the two ZIPs and look at what each service returns for days, not only for money. On short lanes the standard ground tier is regularly close enough in price that the economy option stops making sense.
Compare services on your own route Ground against Ground Saver
Common questions
What does last mile delivery actually mean?
The final leg, from the building where your parcel is sorted for your neighborhood to the doorstep itself. It is the leg with the most stops, the least automation and the highest cost per package, which is why carriers keep inventing cheaper ways to run it.
Why does my UPS tracking end with a postal carrier?
Because the shipper bought UPS Ground Saver. UPS describes it as a lower-cost option for less urgent packages, delivered by UPS and the USPS depending on the location, on ups.com, read 2026-07-28.
How many days does the handoff add?
UPS puts Ground Saver at roughly one to two business days behind UPS Ground on the same route, read 2026-07-28. FedEx states a 2 to 7 business day range for Ground Economy rather than a comparison, read the same day.
Can a package on an economy tier reach a PO Box?
Ground Saver can. UPS lists U.S. Post Office Boxes and APO/FPO/DPO addresses among the destinations the service is available to, read 2026-07-28, and those addresses are reachable only because a postal carrier finishes the trip.
Can I choose who makes the final delivery?
Indirectly, by choosing the service. Buy the standard ground tier and the carrier that collected the box also delivers it; buy the economy tier and the last leg may belong to the postal service, along with its schedule and its notifications.