Postmark: Delayed Message Delivery
Timeline of updates
- resolved
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 support@postmarkapp.com.
Archive proof
Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert. That proves this record existed by then and has not been changed since, by anyone, Rewindex included.
How the archive is checked, and what it cannot prove.
First version captured
In the 2026-10-22 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
738b24f9f7f0c577…
Impact, status and times are the vendor’s own, as last archived. View on status.postmarkapp.com (opens in new tab).
Cite this
Status incident (vendor impact label: minor) posted by Postmark, started 2026-09-22 18:15 UTC, resolved after 20 min, 1 update(s).
- Title
- Delayed Message Delivery
- Vendor
- Postmark
- Date
- URL
- https://rewindex.com/company/postmark/incidents/510118
Postmark profileRecent Postmark incidentsAll outages on September 22, 2026Postmark in September 2026MarkdownJSON