Shipping was a tale of two tiers this quarter. FedEx, USPS, DHL eCommerce, EasyPost, ShipBob, Deliverr, Flexport, and UPS all posted 100% uptime with zero major incidents over the past 90 days, while AfterShip finished last at 97.11% after two outages that together cost nearly 59 hours of downtime.
That is the widest reliability spread of any category StatusBird monitors. The numbers below come from our own independent status checks, run every 2 minutes against each service, covering the 90 days ending July 2026.
Shipping carrier and API reliability rankings, 90 days to July 2026
| Rank | Service | 90-Day Uptime | Grade | Incidents |
|---|---|---|---|---|
| 1 (tie) | Deliverr | 100% | A+ | 0 |
| 1 (tie) | DHL eCommerce | 100% | A+ | 0 |
| 1 (tie) | EasyPost | 100% | A+ | 0 |
| 1 (tie) | FedEx | 100% | A+ | 0 |
| 1 (tie) | Flexport | 100% | A+ | 0 |
| 1 (tie) | ShipBob | 100% | A+ | 0 |
| 1 (tie) | UPS | 100% | A+ | 0 |
| 1 (tie) | USPS | 100% | A+ | 0 |
| 9 | ShipStation | 99.87% | B+ | 1 |
| 10 | Shippo | 99.57% | B+ | 3 |
| 11 | AfterShip | 97.11% | D | 2 |
How each shipping service performed
FedEx: 100% uptime, 0 incidents
FedEx's APIs handle rate quotes, label generation, and tracking for millions of shipments. Across 43,000+ checks this window, we saw zero major or critical incidents. For time-sensitive express shipping, that consistency matters.
USPS: 100% uptime, 0 incidents
USPS is the default economy carrier for most US e-commerce, and its Web Tools APIs sit inside nearly every shipping app. A perfect 90-day record here is good news for the long tail of small parcel shippers.
DHL eCommerce: 100% uptime, 0 incidents
DHL eCommerce specializes in lightweight cross-border parcels, a segment where tracking API failures cause an outsized volume of "where is my order" tickets. It gave us nothing to flag: 100% uptime, A+ grade.
EasyPost: 100% uptime, 0 incidents
EasyPost is a multi-carrier shipping API that abstracts dozens of carriers behind one integration, which makes it a single point of failure by design. This quarter that single point held: zero incidents across 45,000+ checks.
ShipBob: 100% uptime, 0 incidents
ShipBob runs outsourced fulfillment with its own warehouse network, so an outage there can stall pick-and-pack operations, not just labels. It posted a clean 100% over more than 61,000 checks.
Deliverr: 100% uptime, 0 incidents
Deliverr provides fast-tag fulfillment services aimed at marketplace and DTC sellers. Its record this window was spotless.
Flexport: 100% uptime, 0 incidents
Flexport handles freight forwarding and logistics visibility for merchants importing inventory. No major or critical incidents in 90 days.
UPS: 100% uptime, 0 incidents, small sample
UPS also shows 100% uptime, but with an important caveat: our monitoring has only 2 recorded checks for UPS in this window, versus tens of thousands for every other service, because it was added to our tracker very recently. Treat its ranking as provisional until a full quarter of data accumulates.
ShipStation: 99.87% uptime, 1 incident
ShipStation is the order-management and label-printing hub for a huge number of warehouses, so when it stalls, physical fulfillment stops. Its single incident on June 30, 2026 lasted 166 minutes, just under 3 hours. One contained incident in 90 days keeps it at B+, respectable but no longer perfect.
Shippo: 99.57% uptime, 3 incidents
Shippo is a multi-carrier API and app popular with smaller merchants. It logged three separate incidents totaling 532 minutes, an average of 177 minutes each, most recently on April 16, 2026. Three incidents in a quarter suggests a pattern rather than bad luck, even though each individual outage was moderate.
AfterShip: 97.11% uptime, 2 incidents
AfterShip powers branded tracking pages and delivery notifications. Its two incidents were long: 3,548 minutes of downtime combined, averaging 1,774 minutes each, which is nearly 30 hours per incident, with the most recent on April 27, 2026. That earns a D grade and a serious caution. When your tracking provider is down for a full day, customers cannot see where their orders are and your support queue absorbs the difference.
Reading the shipping tier gap
The carriers themselves, FedEx, UPS, USPS, and DHL eCommerce, were flawless this window; the trouble concentrated in the software layer that sits on top of them. ShipStation, Shippo, and AfterShip are exactly the tools merchants integrate most deeply into daily operations, which makes their combined 4,246 minutes of downtime the practical headline of this category. If your entire fulfillment flow runs through one of these hubs, you need to know within minutes when it degrades.
How we measure reliability
Every number above comes from StatusBird's independent monitoring: a status check against each service every 2 minutes, aggregated over the trailing 90 days as of July 2026. Availability counts major and critical outages only, with minor degradation excluded so persistent low-level noise does not distort the rankings. Grades run from A+ to F. You can see live data for all services on the StatusBird reliability tracker and read the full cross-category analysis in the State of E-commerce Infrastructure 2026 report.
Know before your warehouse does
StatusBird monitors ShipStation, Shippo, AfterShip, and every carrier on this list every 2 minutes and sends you an SMS the moment a status change is detected, so a label-printing outage never blindsides your afternoon pick run. Monitor your shipping stack alongside Stripe, Shopify, and 80+ other e-commerce services in one dashboard. Start monitoring free.