Companies / Substack / incidents

Substack: Post notifications are delayed

Affected components: Email deliveryPush Notifications

Timeline of updates

1. investigating2025-10-04 16:06 UTC

   We are experiencing delays in sending out email and push notifications for published posts.

2. identified2025-10-04 16:25 UTC

   The issue has been identified and a fix is being implemented.

3. monitoring2025-10-04 19:22 UTC

   A fix has been implemented and we are monitoring the results.

4. resolved2025-10-04 20:29 UTC

   This incident has been resolved.

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). Substack profile · Recent Substack incidents · Markdown · JSON