Amazon quietly became a serious rival to FedEx and UPS this year, not by shipping its own packages faster, but by offering to ship everyone else's for less. In May, Amazon opened its shipping and storage network, previously reserved for its own retail business and a handful of partners, to any company willing to pay for it. Any multi-carrier shipping strategy that still assumes FedEx and UPS are the only serious national options is already out of date.

Amazon Supply Chain Services now lets any business tap Amazon's trucks, planes, warehouses and last-mile network, independent of whether that business sells a single item on Amazon.com. Consumer goods giants Procter & Gamble and 3M are already using Amazon's freight services, and apparel retailer American Eagle Outfitters has moved direct-to-consumer parcel volume onto Amazon Shipping.

The timing lands squarely in a stretch where FedEx and UPS rates have kept climbing through general rate increases and a thickening stack of surcharges. Amazon has moved in with lower fuel surcharges and, according to people close to the pricing, a real willingness to negotiate on revenue per package to win volume. For any e-commerce operator watching shipping costs eat into margin, that is a signal worth acting on, not noise from a press release.

A carrier price war is good news, with a catch

"They're aggressively just going after UPS and FedEx right now, just to carve out that market share, and they're willing to negotiate on that revenue per piece," said Jack McCrum, director of optimization and analytics at parcel shipping intelligence platform Reveel. That kind of language, aggressive, carving out market share, is not typical from a company best known for shipping its own boxes.

The savings are already showing up in real numbers. Logistics data platform Loop has found some shippers saving up to six dollars per package by shifting eligible residential volume from FedEx and UPS to Amazon Shipping. On thin-margin categories, six dollars a parcel is not a rounding error. It can be the difference between a profitable SKU and a loss leader.

Amazon is reportedly also looking to undercut the US Postal Service specifically on packages under a pound, a category USPS has quietly dominated for years through its worksharing arrangements and last-mile density. If that segment opens up to real competition, it adds another lever for operators shipping light goods such as apparel, accessories and small electronics to pull.

Why this is bigger than one company's pricing

The takeaway is not "switch everything to Amazon." Concentrating volume with any single carrier, Amazon included, just recreates the same fragility that made the FedEx and UPS duopoly risky in the first place. The real shift is that the assumption "there are basically two serious national carriers" no longer holds, and a shipping strategy built on that assumption is now stale.

For years, most mid-size and small e-commerce brands treated carrier selection as a mostly fixed decision: pick FedEx or UPS, sometimes both split by zone or service level, negotiate a discount off list rates once a year, and move on. That approach worked reasonably well when the two incumbents' pricing moved roughly in lockstep. It works far worse when a well-capitalized third option is actively cutting rates to win share.

Regional and last-mile carriers, along with USPS, already fragment the ground shipping market more than most operators give them credit for. Amazon's move adds a genuinely national, high-volume option into that mix, which changes the math on how much carrier diversification actually pays off in practice.

What operators should actually do about it

Reacting to a single data point, such as "Amazon is six dollars cheaper on this lane," by moving all volume over is its own kind of mistake. The more durable response is building the operational and technical ability to route each shipment to whichever carrier is genuinely best for it, by zone, weight, speed requirement and cost, and to keep that decision current as rates change.

That requires visibility that most shipping setups were never built for. A carrier contract signed in January tells you almost nothing about which carrier is cheapest on a specific lane in July, once fuel surcharges, peak season fees and service-level changes have all moved independently of the base rate card.

Rate shop at the shipment level, not the contract level

Annual carrier negotiations lock in a rate card, but real shipping costs move week to week through surcharges, fuel adjustments and peak season fees. Comparing carriers at the individual shipment level, rather than assuming last year's negotiated discount still reflects reality, is what actually captures savings like the ones Loop is reporting.

• Map your shipment profile by zone, weight band and service level before comparing carriers
• Test a new carrier on a slice of volume before a full cutover, not all at once
• Track surcharges and accessorial fees separately from base rates, since they move faster
• Keep a live view of landed cost per shipment, not just the negotiated discount percentage
• Build in a fallback carrier for every lane so no single relationship is a single point of failure

The real lesson is optionality, not Amazon specifically

Amazon's pricing push could ease off once it has captured the market share it wants. General rate increases could reverse. A new entrant could show up next year. None of that changes the underlying lesson: shipping costs are volatile and carrier competitiveness shifts, sometimes quickly. A shipping setup should be built to take advantage of that volatility, not simply absorb it.

That means treating carrier selection as an ongoing operational capability, not a once-a-year negotiation exercise. The businesses that benefited most from this year's price war were not necessarily the ones that bet everything on Amazon early. They were the ones already set up to shift volume quickly once the numbers made sense.

Common questions

Is it risky to move shipping volume to Amazon Shipping?

Any single-carrier dependency carries risk, including with Amazon. The safer approach is treating Amazon Shipping as one option among several rather than a wholesale replacement for existing carriers, and monitoring service quality alongside price as volume shifts.

Will FedEx and UPS just match Amazon's pricing?

They may respond in specific lanes or segments, but a full lockstep response is not guaranteed given their existing cost structures and surcharge-driven revenue models. That uncertainty is exactly why a shipping setup should be able to adapt either way, rather than betting on one outcome.

How often should I re-evaluate carrier rates?

Given how quickly surcharges and fuel adjustments move, a quarterly review is a reasonable minimum, with real-time or shipment-level comparison as the more resilient long-term setup for operators shipping meaningful volume.

Amazon undercutting FedEx and UPS is a reminder that carrier pricing is not fixed. It is a market, and markets move. E-commerce operators who treat shipping as a flexible, multi-carrier decision rather than a locked-in annual contract are the ones positioned to capture savings whichever way the next price war swings. That is exactly the kind of flexibility Zineps is built for: a Logistics OS for e-commerce that lets operators route every shipment across carriers based on real-time cost and performance, instead of betting the whole operation on whichever carrier looked best last January.