All Systems Operational
Uptime over the past 90 days. View historical uptime.
Substack publications Operational
90 days ago
99.88 % uptime
Today
Writer dashboards Operational
90 days ago
99.85 % 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
99.85 % 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
May 17, 2021

No incidents reported today.

May 16, 2021

No incidents reported.

May 15, 2021

No incidents reported.

May 14, 2021

No incidents reported.

May 13, 2021

No incidents reported.

May 12, 2021

No incidents reported.

May 11, 2021

No incidents reported.

May 10, 2021

No incidents reported.

May 9, 2021

No incidents reported.

May 8, 2021

No incidents reported.

May 7, 2021

No incidents reported.

May 6, 2021
Substack is slow or unresponsive
Resolved - This incident has been resolved.
May 6, 09:39 PDT
Monitoring - A fix has been identified and released. We are monitoring the situation, but the Substack service should be back up.
May 6, 09:33 PDT
Investigating - Pages across substack.com are currently experiencing slow load times or are inaccessible. We are investigating the cause.
May 6, 08:33 PDT
May 5, 2021

No incidents reported.

May 4, 2021

No incidents reported.

May 3, 2021
Writer dashboard statistics are unavailable
Resolved - Data has been restored - writer dashboards now are presenting up-to-date information.
May 3, 18:54 PDT
Update - The data restore process is ongoing, and engineers are continuing to monitor progress.
May 3, 18:27 PDT
Update - We are continuing to load up-to-date analytics data to writer dashboards - this work is ongoing.
May 3, 17:46 PDT
Identified - We have identified the issue, and analytics will arrive slowly in the system over the next few hours until they accurately represent our back-end systems.
May 3, 16:54 PDT
Update - Data is returning to availability as it flows through our pipeline, and statistics shown on the dashboard should approach the reality in our analytics database. Engineers will continue to monitor the situation.
May 3, 16:27 PDT
Investigating - Writer dashboard statistics may be unavailable. This is associated with maintenance of our writer analytics database. Engineers are investigating the issue now.
May 3, 16:15 PDT
Update to the Publisher Analytics Database
Completed - The scheduled maintenance has been completed.
May 3, 16:04 PDT
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 3, 16:01 PDT
Scheduled - We will be undergoing brief scheduled maintenance at 4PM Pacific time, and some metrics in the writer dashboard will be unavailable for a short time.
May 3, 15:53 PDT
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