---
title: "Is USPS API Down?"
canonical_url: "https://shipzil.com/carrier/usps"
last_updated: "2026-08-08T15:30:28.126Z"
source: "Shipzil"
---

# Is USPS API Down?

As of 2026-08-08, USPS API is operational on 4 of 4 monitored platforms. 0 of 3 independent companies are reporting a problem. Over the last 90 days the worst-performing platform for USPS was Shippo, at 98.39% reported uptime.

## Status by platform

| Platform | Status | Reading |
|----------|--------|---------|
| EasyPost | Operational | current |
| Shippo | Operational | current |
| ShipStation | Operational | current |
| ShipEngine | Operational | current |

## Reported uptime, 90 days

Calculated from incident durations each platform reports, not independently measured. Standing advisories (unresolved over 48 hours) and platform account-surface incidents (login, dashboard, billing) are excluded — neither is carrier API downtime.

| Platform | Uptime | Incidents | Downtime | Publishes metrics |
|----------|--------|-----------|----------|-------------------|
| EasyPost | 99.48% | 20 | 11.1h | yes |
| Shippo (worst) | 98.39% | 30 | 34.9h | yes |
| ShipStation | 99.19% | 7 | 17.4h | no |
| ShipEngine | 99.80% | 16 | 4.4h | no |

## API response time, 24h

- EasyPost: 233ms current, 228ms average
- Shippo: 429ms current, 410ms average

## Error rate, 24h

- EasyPost USPS Error Rate: 0.00% current, 0.01% average

## Incident history (25 most recent)

| Date | Severity | Title | Duration | Platform | Attribution |
|------|----------|-------|----------|----------|-------------|
| 2026-08-07 | minor | Carrier Issues | 4h 11m | ShipStation | platform-component |
| 2026-07-25 | major | USPS Shipment service outage | 2h 1m | Shippo | component |
| 2026-07-23 | minor* | EasyPost is experiencing internet connectivity issues and is investigating | 7h 28m | EasyPost | component |
| 2026-07-21 | major | Elevated error rate on Rating API from USPS. | 3h 8m | Shippo | component |
| 2026-07-18 | minor | Elevated error rate on USPS Shipment service | 6h 10m | Shippo | component |
| 2026-07-14 | major | General Latency | 34m | ShipEngine | platform-component |
| 2026-07-14 | minor | USPS Shipment service outage | 4h 30m | Shippo | component |
| 2026-07-13 | minor | Carrier Issues | 14h 9m | ShipStation | platform-component |
| 2026-07-11 | minor | Elevated error rate on USPS Shipment service | 7h 22m | Shippo | component |
| 2026-07-09 | critical | Degraded API Performance | 9m | EasyPost | component |
| 2026-07-09 | minor | Elevated error rate on Rating API from USPS. | 1h 17m | Shippo | component |
| 2026-06-24 | minor* | USPS shipment generation was briefly unavailable | 0m | EasyPost | component |
| 2026-06-19 | minor | Increased rate of latency and timeout errors. | 5h 45m | ShipEngine | platform-component |
| 2026-06-11 | major | Smart rates are intermittently failing | 3h 56m | EasyPost | platform-component |
| 2026-06-11 | minor | Degraded Performance for Rating and Label Generation APIs | 2h 10m | Shippo | platform-component |
| 2026-06-11 | minor | Elevated Errors Affecting QR Code Generation | 3h 4m | Shippo | component |
| 2026-06-08 | minor | USPS Tracking disruption | 5h 7m | Shippo | component |
| 2026-06-05 | minor* | Elevated error rate on USPS, UPS | 38m | EasyPost | component |
| 2026-06-03 | minor* | Delays to async processes | 1h 18m | EasyPost | platform-component |
| 2026-05-27 | major | Major Outage for Advanced Tracking | 1h 28m | EasyPost | platform-component |
| 2026-05-22 | minor* | Partial API outage | 13m | EasyPost | platform-component |
| 2026-05-11 | major | We are experiencing intermittent issues with our API Endpoints | 32m | EasyPost | platform-component |
| 2026-05-08 | minor | USPS Tracking disruption | 2h 15m | Shippo | component |
| 2026-04-28 | minor | Elevated 5XX responses | 4h 44m | EasyPost | platform-component |
| 2026-04-27 | minor* | 3rd party tracking updates issue | 22d 11h | Shippo | keyword |

## Maintenance (10)

- 2026-08-29 | Planned Systems Maintenance For Easypost Services | EasyPost
- 2026-08-22 | Planned Systems Maintenance For Easypost Services | EasyPost
- 2026-08-17 | USPS Tracking Maintenance | Shippo
- 2026-08-15 | Planned System Maintenance For Easypost Services | EasyPost
- 2026-08-12 | USPS QR Code maintenance | Shippo
- 2026-08-09 | USPS Tracking Maintenance | Shippo
- 2026-08-03 | USPS Tracking Maintenance | Shippo
- 2026-07-31 | Team Global Express Maintenance | ShipStation
- 2026-07-30 | USPS Maintenance | Shippo
- 2026-07-29 | USPS Scheduled Maintenance | Shippo

---

Source: https://shipzil.com/carrier/usps