All Systems Operational
Uptime over the past 90 days. View historical uptime.
Substack publications Operational
90 days ago
99.92 % uptime
Today
Writer dashboards Operational
90 days ago
99.93 % 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
99.93 % uptime
Today
Push Notifications Operational
90 days ago
100.0 % uptime
Today
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.

Past Incidents
Jan 29, 2023

No incidents reported today.

Jan 28, 2023

No incidents reported.

Jan 27, 2023
Issue with publishing posts
Resolved - All previously-scheduled posts have been sent, and this incident has been resolved. We apologize for any inconvenience.
Jan 27, 05:33 PST
Monitoring - We're aware of an issue which caused scheduled emails to be delayed. A fix has been implemented and previously-scheduled emails are now being sent. Posts scheduled before 18:00 PT on 2022-01-26 were unaffected. We apologize for the inconvenience.
Jan 27, 05:15 PST
Identified - The issue has been identified and a fix is being implemented.
Jan 27, 04:31 PST
Jan 26, 2023

No incidents reported.

Jan 25, 2023

No incidents reported.

Jan 24, 2023

No incidents reported.

Jan 23, 2023
Scheduled database maintenance
Completed - The scheduled maintenance has been completed.
Jan 23, 18:32 PST
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jan 23, 18:00 PST
Scheduled - We will be performing a maintenance on the database powering Substack. We expect a few minutes of downtime.
Jan 20, 13:59 PST
Jan 22, 2023

No incidents reported.

Jan 21, 2023

No incidents reported.

Jan 20, 2023
Slow Response Times
Resolved - This incident has been resolved.
Jan 20, 12:02 PST
Monitoring - A suspicious traffic pattern was identified and mitigated.
Jan 20, 09:12 PST
Investigating - We are currently investigating slow response times throughout the site
Jan 20, 08:52 PST
Jan 19, 2023

No incidents reported.

Jan 18, 2023
Scheduled database maintenance
Completed - The scheduled maintenance has been completed.
Jan 18, 18:44 PST
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Jan 18, 18:01 PST
Scheduled - We will be performing a maintenance on the database powering the publisher dashboard. Subscription count and subscriber dashboard data may be missing or out of date during this maintenance. Expected downtime should be less than a minute.
Jan 18, 13:20 PST
Issues loading some post pages
Resolved - This incident has been resolved.
Jan 18, 13:22 PST
Monitoring - A fix has been implemented and we are monitoring the results.
Jan 18, 13:07 PST
Identified - We have identified an issue causing some posts to not load properly.
Jan 18, 12:43 PST
Jan 17, 2023

No incidents reported.

Jan 16, 2023

No incidents reported.

Jan 15, 2023

No incidents reported.

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