Substack Outage History

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Pingoru has recorded 52 incidents for Substack: 18 in the last 12 months and 4 in the last 90 days.

Source: substack.statuspage.io

52incidents recorded
18last 12 months
4last 90 days
3 daystypical duration
Incidents per month
012AprMayJunJulAugSepOctNov0
Share of hours with an open incident, any severity
0%50%100%AprMayJunJulAugSepOctNov0%
Pingoru began tracking Substack in April 2026, so earlier months are not shown. Hover a bar for its value.
Show as a table
MonthIncidentsHours with an open incident
April 202610 of 720 (0%)
May 202600 of 744 (0%)
June 202610 of 720 (0%)
July 202616 of 744 (1%)
August 202621 of 744 (0%)
September 202600 of 720 (0%)
October 202621 of 744 (0%)
November 202600 of 20 (0%)

Incidents, newest first

Minor June 23, 2025 Substack Availability Issue 11h 33m Substack publications, Writer dashboards, Email delivery, Subscription invoice processing and 3 more

Started Jun 23, 2025, 05:45 PM UTC· resolved Jun 24, 2025, 05:19 AM UTC

  1. investigating Jun 23, 2025, 05:45 PM UTC

    We are currently investigating a higher error rate when trying to load Substack

  2. identified Jun 23, 2025, 05:51 PM UTC

    The issue has been identified and a fix is being implemented.

  3. monitoring Jun 23, 2025, 06:04 PM UTC

    Restored functionality on Substack.com and app. We are continuing to work on a fix for some delays in email delivery.

  4. monitoring Jun 23, 2025, 06:14 PM UTC

    Continuing to bring systems back online. Writer dashboard stats including open rates may be delayed or temporarily inaccurate.

  5. resolved Jun 24, 2025, 05:19 AM UTC

    This incident has been resolved.

Read the full incident report →

Notice June 23, 2025 Substack Availability Issues 31m Substack publications, Writer dashboards, Substack.com

Started Jun 23, 2025, 04:50 PM UTC· resolved Jun 23, 2025, 05:22 PM UTC

  1. investigating Jun 23, 2025, 04:50 PM UTC

    We are currently investigating a higher error rate when trying to load Substack

  2. identified Jun 23, 2025, 04:56 PM UTC

    The issue has been identified and a fix is being implemented.

  3. monitoring Jun 23, 2025, 04:57 PM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Jun 23, 2025, 05:22 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor May 24, 2025 Substack is experiencing issues 12h 31m Writer dashboards, Email delivery, Push Notifications

Started May 24, 2025, 02:47 PM UTC· resolved May 25, 2025, 03:18 AM UTC

  1. investigating May 24, 2025, 02:47 PM UTC

    We are currently investigating this issue.

  2. monitoring May 24, 2025, 03:20 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved May 25, 2025, 03:18 AM UTC

    This incident has been resolved.

Read the full incident report →

Minor April 30, 2025 Email analytics backup 1d 11h Writer dashboards

Started Apr 30, 2025, 01:31 PM UTC· resolved May 02, 2025, 01:21 AM UTC

  1. investigating Apr 30, 2025, 01:31 PM UTC

    We are experiencing a delay in reader activity statistics relating to email deliveries/opens. Emails continue to send as normal, though their stats are currently delayed.

  2. identified Apr 30, 2025, 02:21 PM UTC

    We have identified the issue related to delayed statistics for email deliveries and opens. We are currently processing enqueued events and working toward full recovery.

  3. identified May 01, 2025, 04:15 AM UTC

    Our engineers are backfilling missing data from the impacted time period. We'll continue to update the incident as that process completes.

  4. identified May 01, 2025, 11:47 PM UTC

    At this time, email delivery statistics are accurate, but we're still in the process of backfilling email open statistics between Tuesday and Wednesday afternoon.

  5. resolved May 02, 2025, 01:21 AM UTC

    All email analytics should be up to date.

Read the full incident report →

Major April 29, 2025 Increased error rates 2h 13m Substack publications, Writer dashboards, Email delivery, Subscription invoice processing and 3 more

Started Apr 29, 2025, 05:03 PM UTC· resolved Apr 29, 2025, 07:16 PM UTC

  1. investigating Apr 29, 2025, 05:03 PM UTC

    We are currently investigating this issue.

  2. investigating Apr 29, 2025, 05:49 PM UTC

    This issue is causing performance degradation across the system.

  3. investigating Apr 29, 2025, 05:52 PM UTC

    The website is down.

  4. identified Apr 29, 2025, 06:03 PM UTC

    We are experiencing elevated error rates across all Substack applications including publication websites, Substack.com, and the Substack apps. We have identified the issue and we are working toward recovery.

  5. identified Apr 29, 2025, 06:11 PM UTC

    We are beginning to see recovery across Substack and error rates are returning the normal levels.

  6. identified Apr 29, 2025, 06:15 PM UTC

    We are continuing to see recovery. Substack publications, the publisher dashboard, and other functionality are fully recovered. We continue to work on increased error rates across Substack.com, the Substack app, and the post editor.

  7. monitoring Apr 29, 2025, 06:41 PM UTC

    We are seeing full recovery across Substack and our team is now monitoring.

  8. resolved Apr 29, 2025, 07:16 PM UTC

    This incident has been resolved.

Read the full incident report →

Major March 24, 2025 Errors loading notes feed 28m Substack.com

Started Mar 24, 2025, 11:41 PM UTC· resolved Mar 25, 2025, 12:09 AM UTC

  1. identified Mar 24, 2025, 11:41 PM UTC

    We have identified an issue preventing users from loading the notes feed and are implementing a fix

  2. monitoring Mar 25, 2025, 12:02 AM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Mar 25, 2025, 12:09 AM UTC

    This incident has been resolved.

Read the full incident report →

Minor March 11, 2025 Email delivery delays 51m Email delivery

Started Mar 11, 2025, 04:43 PM UTC· resolved Mar 11, 2025, 05:35 PM UTC

  1. investigating Mar 11, 2025, 04:43 PM UTC

    We are investigating reports of delayed email delivery for posts published on Substack.

  2. identified Mar 11, 2025, 04:52 PM UTC

    We have identified the cause of the email delays and are working to resolve.

  3. monitoring Mar 11, 2025, 04:57 PM UTC

    The issue causing delays to email delivery on posts has been addressed.

  4. resolved Mar 11, 2025, 05:35 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice March 1, 2025 Issues loading Notes 6h 58m Substack.com

Started Mar 01, 2025, 03:38 PM UTC· resolved Mar 01, 2025, 10:37 PM UTC

  1. investigating Mar 01, 2025, 03:38 PM UTC

    We are currently investigating an issue causing problems loading the Notes feed.

  2. monitoring Mar 01, 2025, 03:46 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Mar 01, 2025, 10:37 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor February 28, 2025 Publisher Dashboard and Notifications are experiencing slowdowns 45m Writer dashboards, Substack.com

Started Feb 28, 2025, 11:43 PM UTC· resolved Mar 01, 2025, 12:28 AM UTC

  1. investigating Feb 28, 2025, 11:43 PM UTC

    Publisher Dashboard and Notifications are experiencing slowdowns. We are investigating the cause.

  2. identified Feb 28, 2025, 11:45 PM UTC

    The issue has been identified and a fix is being implemented.

  3. monitoring Feb 28, 2025, 11:56 PM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Mar 01, 2025, 12:28 AM UTC

    This incident has been resolved.

Read the full incident report →

Major February 3, 2025 Substack home page and app home tab errors 1h 24m Substack.com

Started Feb 03, 2025, 07:25 PM UTC· resolved Feb 03, 2025, 08:49 PM UTC

  1. investigating Feb 03, 2025, 07:25 PM UTC

    We are investigating reports of Notes not loading on the Substack homepage.

  2. investigating Feb 03, 2025, 07:29 PM UTC

    We have identified an issue causing increased errors from the Substack web destination as well as the home tab of the Substack app. We are working to resolve.

  3. identified Feb 03, 2025, 07:37 PM UTC

    We have identified the issue and we're working to resolve the errors from the Substack.com home page and Substack app home tab.

  4. identified Feb 03, 2025, 08:14 PM UTC

    We are continuing to work to resolve the increased error rate from the Substack home page and Substack app home tab. Some Substack users may not see Notes in your feed while we work to restore service.

  5. monitoring Feb 03, 2025, 08:31 PM UTC

    We have restored the feed for all users on Substack.com and in the Substack app home tab and have seen error rates subside. We are continuing to monitor.

  6. resolved Feb 03, 2025, 08:49 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice January 27, 2025 Delays in stats 55m Writer dashboards

Started Jan 27, 2025, 09:08 PM UTC· resolved Jan 27, 2025, 10:03 PM UTC

  1. identified Jan 27, 2025, 09:08 PM UTC

    We're experiencing a delay in processing some stats across the platform. Data on various dashboards may be out of date.

  2. monitoring Jan 27, 2025, 09:57 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Jan 27, 2025, 10:03 PM UTC

    This incident has been resolved.

Read the full incident report →

Major January 21, 2025 Increased latency and errors 52m Substack publications, Writer dashboards, Substack.com, Custom domains

Started Jan 21, 2025, 11:44 PM UTC· resolved Jan 22, 2025, 12:36 AM UTC

  1. investigating Jan 21, 2025, 11:44 PM UTC

    We are investigating reports of increased latency and errors for Substack.com, publication websites, and the Substack app.

  2. investigating Jan 21, 2025, 11:48 PM UTC

    We are continuing to investigate reports of increased latency and errors for all Substack websites and applications.

  3. identified Jan 22, 2025, 12:12 AM UTC

    We have identified the issue and are beginning to see recovery across all Substack websites and applications.

  4. monitoring Jan 22, 2025, 12:20 AM UTC

    Substack websites and applications are fully operational and our team is monitoring.

  5. resolved Jan 22, 2025, 12:36 AM UTC

    This incident has been resolved.

Read the full incident report →

Notice January 10, 2025 Degraded performance for search and publisher dashboard 2h 50m

Started Jan 10, 2025, 03:13 PM UTC· resolved Jan 10, 2025, 06:03 PM UTC

  1. investigating Jan 10, 2025, 03:13 PM UTC

    We are currently investigating this issue.

  2. monitoring Jan 10, 2025, 03:33 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Jan 10, 2025, 06:03 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice December 19, 2024 We are investigating an issue where stats are delayed across the platform. 39m Writer dashboards

Started Dec 19, 2024, 01:13 PM UTC· resolved Dec 19, 2024, 01:53 PM UTC

  1. investigating Dec 19, 2024, 01:13 PM UTC

    We are currently investigating this issue.

  2. monitoring Dec 19, 2024, 01:44 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Dec 19, 2024, 01:53 PM UTC

    This incident has been resolved.

Read the full incident report →

Major December 13, 2024 Elevated Error Rates 28m Substack publications, Writer dashboards, Email delivery, Subscription invoice processing and 3 more

Started Dec 13, 2024, 04:21 PM UTC· resolved Dec 13, 2024, 04:50 PM UTC

  1. monitoring Dec 13, 2024, 04:21 PM UTC

    We are experiencing an outage, but we are recovering.

  2. identified Dec 13, 2024, 04:25 PM UTC

    We are currently experiencing an elevated error rate to Substack web sites and through our mobile application, but are seeing recovery. We are continuing to work toward mitigation.

  3. monitoring Dec 13, 2024, 04:28 PM UTC

    Substack services are fully available. We are continuing to monitor.

  4. resolved Dec 13, 2024, 04:50 PM UTC

    This incident has been resolved.

Read the full incident report →