USPS Service Degradation

What to do

• Check whether you use Shippo USPS. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 4h 15m it lasted.

  Anything that failed between 2026-10-16 04:06 UTC and 2026-10-16 08:20 UTC may need a replay.

• Subscribe to Shippo's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=shippo works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Root cause

USPS has confirmed that the current disruption is caused by scheduled maintenance on their systems.

Updates from Shippo 4

1. investigatingOct 16, 2026, 4:06 AM UTC

   we are currently observing an elevated error rate on USPS's Transaction and SCAN form APIs. Label generation for International, Military, and U.S. Territory shipments and SCAN form generation will be unavailable; domestic label generation is not impacted. We have reached out to USPS and are actively monitoring the situation. We will provide a further update as soon as we receive one from the carrier.

   provider

2. investigatingOct 16, 2026, 5:22 AM UTC

   We are continuing to investigate this issue.

   provider

3. identifiedOct 16, 2026, 5:23 AM UTC

   USPS has confirmed that the current disruption is caused by scheduled maintenance on their systems.

   provider

4. resolvedOct 16, 2026, 8:20 AM UTC

   This incident has been resolved.

   provider

Corrections

None so far.

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