Outage report · Partial outage

Postmark outage on Oct 20, 2025

Upstream Cloud Provider Outage

SeverityPartial outage
StartedOct 20, 2025, 06:17UTC
ResolvedOct 21, 2025, 04:30UTC
Duration22h 14m

What happened

Postmark reported a partial outage starting Oct 20, 2025, 06:17 UTC. It was marked resolved at Oct 21, 2025, 04:30 UTC.

  • The incident lasted 22h 14m from first report to resolution.
  • It was the 2nd longest of 3 significant outages Postmark reported in the 12 months up to it.
  • Postmark had reported no other partial or major outages in the 90 days before it.
  • 12 other vendors we track reported a significant incident within 12 hours of it.

Latest update from Postmark

The upstream cloud provider resolved the outage at approximately 653pm EDT. After additional monitoring, we are resolving this issue.

Read Postmark's official incident report ↗

What our independent monitoring saw

Our independent monitoring of Postmark started after this incident, so this report is based on Postmark's status page.

Other outages around the same time

Significant incidents other vendors reported within 12 hours of this one.

Postmark's overall reliability

68.3/100

Postmark has a reliability score of 68.3/100, with 99.58% effective uptime and 8 incidents over the last 90 days.

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