Resolved after 1 day 19 hours, affecting Stamps.com, on September 21, 2026.
We are aware of reports of inaccurate rates for some USPS mailing services through ShipStation. Our engineering team is actively investigating, and we will post another update as soon as more information is available.
Affected components
Stamps.com
Update timeline
- investigating Sep 21, 2026, 08:46 PM UTC
We are aware of reports of inaccurate rates for some USPS mailing services through ShipStation. Our engineering team is actively investigating, and we will post another update as soon as more information is available.
- resolved Sep 23, 2026, 04:39 PM UTC
This incident has been resolved.
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