- Level
- confirmed
- Worst impact
- Degraded
- Components
- Substack publications, Writer dashboards, Email delivery, Substack.com, Custom domains
- Down Index
- 34of 100
What to do
Check whether you use Substack Substack publications, Writer dashboards, Email delivery, Substack.com and 1 more. Check your stack
Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.Confirm your retries, queues and scheduled jobs caught up after the 3h 47m it lasted.
Anything that failed between 2025-09-15 15:24 UTC and 2025-09-15 19:12 UTC may need a replay.Subscribe to Substack's feed to hear about the next one first. RSS feed
https://down.guide/feed?provider=substack works in Slack (/feed subscribe), Discord feed bots and any RSS reader.
Updates from Substack 10
- investigating
We are currently investigating reports of increased latency and slow response times across Substack.
provider
- investigating
We are continuing to investigate increased latency and error rates across Substack.
provider
- identified
We have identified an issue and are seeing normal performance across all systems.
provider
- identified
We are continuing to investigate increased latency and error rates across Substack.
provider
- identified
We are working to resolve the remaining performance issues across Substack and expect to see recovery shortly.
provider
- monitoring
We are seeing recovery of performance across Substack and are monitoring the issue.
provider
- monitoring
As part of the earlier incident, we are noting delays in analytics updating and post email delivery. We are working to resolve the issue.
provider
- identified
We are seeing recurrence of increased error rates and degraded performance across Substack.
provider
- monitoring
Substack is operating normally and our team is monitoring.
provider
- resolved
This incident has been resolved.
provider
Reports count in aggregate; nothing about you is shown.
Corrections
None so far.
Something wrong on this page? Report an error or send us a note. Every fix is listed here.
Questions about DWN-455fa82a6b
Is Substack still down?
No, this incident was resolved 2025-09-15 19:12 UTC. For Substack's live state, see https://down.guide/substack.
How long did it last?
3h 47m, from 2025-09-15 15:24 UTC to 2025-09-15 19:12 UTC, by the times Substack posted.
What was affected?
Substack named Substack publications, Writer dashboards, Email delivery, Substack.com and 1 more.
What caused it?
Substack hasn't published a root cause. If it does, it shows here.
Where does this come from?
Substack's official status page, https://substack.statuspage.io, quoted verbatim. down.guide's own probes, reports and social counts are labeled as ours.