Postmark incident

Delayed Message Delivery

Resolved after 20 minutes, affecting API and Sending and 1 more, on September 22, 2026.

resolved Sep 24, 2026, 07:49 PM UTC

A subset of messages accepted between 2:15 pm and 2:35 pm EDT on September 22 (18:15 – 18:35 UTC) were held in queue due to a processing issue instead of being delivered immediately. Those messages were fully processed and delivered at 3:38 pm EDT on September 24 (19:38 UTC). No messages were lost. Messages accepted outside of this 20-minute window were not affected and were delivered normally. If you have questions about a specific message, please reach out to us at [email protected].

Started
Sep 22, 2026, 06:15 PM UTC
Resolved
Sep 22, 2026, 06:35 PM UTC
Duration
20m
Detected by Pingoru
Sep 22, 2026, 06:15 PM UTC

Affected components

APISendingSMTPSending

Update timeline

  1. resolved Sep 24, 2026, 07:49 PM UTC

    A subset of messages accepted between 2:15 pm and 2:35 pm EDT on September 22 (18:15 – 18:35 UTC) were held in queue due to a processing issue instead of being delivered immediately. Those messages were fully processed and delivered at 3:38 pm EDT on September 24 (19:38 UTC). No messages were lost. Messages accepted outside of this 20-minute window were not affected and were delivered normally. If you have questions about a specific message, please reach out to us at [email protected].

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