Substack experienced a minor incident on March 11, 2025 affecting Email delivery, lasting 51m. The incident has been resolved; the full update timeline is below.
Affected components
Email delivery
Update timeline
- investigating Mar 11, 2025, 04:43 PM UTC
We are investigating reports of delayed email delivery for posts published on Substack.
- identified Mar 11, 2025, 04:52 PM UTC
We have identified the cause of the email delays and are working to resolve.
- monitoring Mar 11, 2025, 04:57 PM UTC
The issue causing delays to email delivery on posts has been addressed.
- resolved Mar 11, 2025, 05:35 PM UTC
This incident has been resolved.