Shippo: Elevated error rate on USPS Transaction API

What to do

Check whether you use Shippo USPS. Check your stack
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Confirm your retries, queues and scheduled jobs caught up after the 33m it lasted.
Anything that failed between 2026-03-12 16:21 UTC and 2026-03-12 16:54 UTC may need a replay.
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investigatingMar 12, 2026, 4:21 PM UTC
We are currently experiencing an issue affecting USPS label generation via the API, which is impacting our ability to create both domestic and international USPS labels. Our team is actively investigating the issue and is in contact with USPS to identify the cause and restore normal service as quickly as possible.
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investigatingMar 12, 2026, 4:36 PM UTC
We are continuing to investigate this issue.
provider
monitoringMar 12, 2026, 4:37 PM UTC
We started seeing recovery for label generation , we are monitoring things for a while
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resolvedMar 12, 2026, 4:54 PM UTC
This incident has been resolved.
provider

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None so far.

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Is Shippo still down?

No, this incident was resolved 2026-03-12 16:54 UTC. For Shippo's live state, see https://down.guide/shippo.

How long did it last?

33m, from 2026-03-12 16:21 UTC to 2026-03-12 16:54 UTC, by the times Shippo posted.

What was affected?

Shippo named USPS.

What caused it?

Shippo hasn't published a root cause. If it does, it shows here.

Where does this come from?

Shippo's official status page, https://status.goshippo.com, quoted verbatim. down.guide's own probes, reports and social counts are labeled as ours.