All Systems Operational

Uptime over the past 90 days. View historical uptime.
Substack publications Operational
90 days ago
100.0 % uptime
Today
Writer dashboards Operational
90 days ago
100.0 % uptime
Today
Email delivery Operational
90 days ago
100.0 % uptime
Today
Subscription invoice processing Operational
90 days ago
100.0 % uptime
Today
Substack.com Operational
90 days ago
100.0 % uptime
Today
Push Notifications Operational
90 days ago
100.0 % uptime
Today
Custom domains Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Major outage
Partial outage
No downtime recorded on this day.
No data exists for this day.
had a major outage.
had a partial outage.

No incidents or maintenance related to this downtime.

Sep 16, 2025

No incidents reported today.

Sep 15, 2025
Substack experiencing increased latency
Resolved - This incident has been resolved.
Sep 15, 12:12 PDT
Monitoring - Substack is operating normally and our team is monitoring.
Sep 15, 11:39 PDT
Identified - We are seeing recurrence of increased error rates and degraded performance across Substack.
Sep 15, 10:43 PDT
Update - As part of the earlier incident, we are noting delays in analytics updating and post email delivery. We are working to resolve the issue.
Sep 15, 09:53 PDT
Monitoring - We are seeing recovery of performance across Substack and are monitoring the issue.
Sep 15, 09:46 PDT
Update - We are working to resolve the remaining performance issues across Substack and expect to see recovery shortly.
Sep 15, 09:38 PDT
Update - We are continuing to investigate increased latency and error rates across Substack.
Sep 15, 08:50 PDT
Identified - We have identified an issue and are seeing normal performance across all systems.
Sep 15, 08:42 PDT
Update - We are continuing to investigate increased latency and error rates across Substack.
Sep 15, 08:34 PDT
Investigating - We are currently investigating reports of increased latency and slow response times across Substack.
Sep 15, 08:24 PDT
Sep 14, 2025

No incidents reported.

Sep 13, 2025

No incidents reported.

Sep 12, 2025

No incidents reported.

Sep 11, 2025

No incidents reported.

Sep 10, 2025

No incidents reported.

Sep 9, 2025

No incidents reported.

Sep 8, 2025

No incidents reported.

Sep 7, 2025

No incidents reported.

Sep 6, 2025

No incidents reported.

Sep 5, 2025

No incidents reported.

Sep 4, 2025

No incidents reported.

Sep 3, 2025

No incidents reported.

Sep 2, 2025

No incidents reported.

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