Substack experienced a minor incident on June 23, 2025 affecting Substack publications and Writer dashboards and 1 more component, lasting 11h 33m. The incident has been resolved; the full update timeline is below.
Affected components
Substack publicationsWriter dashboardsEmail deliverySubscription invoice processingSubstack.comPush NotificationsCustom domains
Update timeline
- investigating Jun 23, 2025, 05:45 PM UTC
We are currently investigating a higher error rate when trying to load Substack
- identified Jun 23, 2025, 05:51 PM UTC
The issue has been identified and a fix is being implemented.
- monitoring Jun 23, 2025, 06:04 PM UTC
Restored functionality on Substack.com and app. We are continuing to work on a fix for some delays in email delivery.
- monitoring Jun 23, 2025, 06:14 PM UTC
Continuing to bring systems back online. Writer dashboard stats including open rates may be delayed or temporarily inaccurate.
- resolved Jun 24, 2025, 05:19 AM UTC
This incident has been resolved.