Substack outage, 15 September 2025

Substack experiencing increased latency

Started
Resolved
15 Sept 2025, 19:12 UTC (after 3 h 47 min)
Impact
Minor
Affected
Substack publications, Writer dashboards, Email delivery, Substack.com, Custom domains

Last update from Substack

This incident has been resolved.

15 Sept 2025, 19:12 UTC

Read the full incident on the official Substack status page

Is Substack down now?

This page is the record of one past incident. For the live status, see Is Substack down right now? - it reads the official status page every 2 minutes.

Other Substack incidents

  1. Elevated latencies

  2. Delays in post delivery stats

  3. Issues loading Notes

  4. Issues loading media on Substack

  5. Delays in post delivery

  6. Service degraded due to a provider.

  7. Issue with reported open rates

  8. We're aware of an issue causing delays in publisher stats

All recorded Substack incidents