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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.

Jun 17, 2026

No incidents reported today.

Jun 16, 2026

No incidents reported.

Jun 15, 2026

No incidents reported.

Jun 14, 2026

No incidents reported.

Jun 13, 2026

No incidents reported.

Jun 12, 2026

No incidents reported.

Jun 11, 2026

No incidents reported.

Jun 10, 2026

No incidents reported.

Jun 9, 2026

No incidents reported.

Jun 8, 2026

No incidents reported.

Jun 7, 2026

No incidents reported.

Jun 6, 2026

No incidents reported.

Jun 5, 2026

No incidents reported.

Jun 4, 2026

No incidents reported.

Jun 3, 2026
Delays in post delivery
Resolved - This incident has been resolved.
Jun 3, 07:50 PDT
Monitoring - A fix has been implemented and we are monitoring the results.
Jun 3, 07:16 PDT
Investigating - We are experiencing delays in post email delivery due to an outage from a third party service provider.
Jun 3, 06:58 PDT
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