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    Substack outage history

    50 recorded Substack incidents since June 2024, with official updates, affected components, duration and resolution information.

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    Delays in post delivery

    Started June 3, 2026 at 1:58 PM UTC · 52m

    Pending
    Affected components
    Email delivery
    1. June 3, 2026 at 1:58 PM UTCinvestigating

      We are experiencing delays in post email delivery due to an outage from a third party service provider.

    2. June 3, 2026 at 2:16 PM UTCmonitoring

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

    3. June 3, 2026 at 2:50 PM UTCresolved

      This incident has been resolved.

    Service degraded due to a provider.

    Started April 22, 2026 at 7:12 PM UTC · 1h 36m

    Pending
    Affected components
    Writer dashboardsCustom domainsPush NotificationsEmail deliverySubscription invoice processingSubstack.comSubstack publications
    1. April 22, 2026 at 7:12 PM UTCinvestigating

      We are experiencing an issue with a provider.

    2. April 22, 2026 at 7:36 PM UTCidentified

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

    3. April 22, 2026 at 7:45 PM UTCmonitoring

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

    4. April 22, 2026 at 8:48 PM UTCresolved

      This incident has been resolved.

    Issue with reported open rates

    Started March 27, 2026 at 10:20 PM UTC · 44d 19h

    Pending
    Affected components
    Email delivery
    1. March 27, 2026 at 10:20 PM UTCinvestigating

      We’re investigating an issue affecting reported open rates for some publishers. Current evidence suggests this is related to how Gmail loads tracking pixels, and does not indicate a change in engagement or deliverability. We take responsibility for ensuring these metrics are accurate and are prioritizing improvements to our open rate tracking so this is resolved as quickly as possible. We will continue to provide updates here as we learn more.

    2. May 11, 2026 at 5:55 PM UTCresolved

      This incident has been resolved.

    We're aware of an issue causing delays in publisher stats

    Started February 27, 2026 at 12:41 AM UTC · 2h 54m

    IssuesMinor incident
    Affected components
    Writer dashboards
    1. February 27, 2026 at 12:41 AM UTCidentified

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

    2. February 27, 2026 at 3:35 AM UTCresolved

      This incident has been resolved.

    Publisher Stats Loading

    Started February 26, 2026 at 11:10 PM UTC · 33m

    IssuesMinor incident
    Affected components
    Writer dashboards
    1. February 26, 2026 at 11:10 PM UTCinvestigating

      We're aware of an issue affecting loading publisher stats

    2. February 26, 2026 at 11:40 PM UTCidentified

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

    3. February 26, 2026 at 11:43 PM UTCresolved

      This incident has been resolved.

    Substack Availability Issues

    Started February 12, 2026 at 11:25 PM UTC · 1h 5m

    OutageMajor incident
    Affected components
    Writer dashboardsSubstack.comSubstack publications
    1. February 12, 2026 at 11:25 PM UTCinvestigating

      We are currently investigating this issue.

    2. February 12, 2026 at 11:42 PM UTCidentified

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

    3. February 12, 2026 at 11:43 PM UTCmonitoring

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

    4. February 13, 2026 at 12:31 AM UTCresolved

      This incident has been resolved.

    Substack Availability Issues

    Started February 11, 2026 at 2:24 PM UTC · 1h 21m

    OutageMajor incident
    Affected components
    Writer dashboardsSubstack.comSubstack publications
    1. February 11, 2026 at 2:24 PM UTCinvestigating

      We are investigating an issue loading substack.com

    2. February 11, 2026 at 2:41 PM UTCidentified

      We've identified the issue and are deploying changes to address.

    3. February 11, 2026 at 2:53 PM UTCidentified

      We are continuing to work to restore service. Currently all Substack clients and services are experiencing elevated error rates and degraded performance.

    4. February 11, 2026 at 2:57 PM UTCidentified

      We are continuing to work on a fix for this issue.

    5. February 11, 2026 at 3:10 PM UTCidentified

      We have deployed a fix and are continuing to see recovery.

    6. February 11, 2026 at 3:15 PM UTCmonitoring

      All Substack services have been restored and error rates and latency have returned to normal levels. Our team is continuing to monitor.

    7. February 11, 2026 at 3:45 PM UTCresolved

      This incident has been resolved.

    Issues loading Notes

    Started January 15, 2026 at 12:35 PM UTC · 15m

    Pending
    Affected components
    Substack.com
    1. January 15, 2026 at 12:35 PM UTCinvestigating

      We're currently investigating an issue affecting load times of notes and inboxes

    2. January 15, 2026 at 12:47 PM UTCmonitoring

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

    3. January 15, 2026 at 12:50 PM UTCresolved

      This incident has been resolved.

    Elevated latencies

    Started January 14, 2026 at 5:38 PM UTC · 3h 9m

    Pending
    1. January 14, 2026 at 5:38 PM UTCinvestigating

      Substack is experiencing elevated latencies. We are working to investigate the issue.

    2. January 14, 2026 at 7:25 PM UTCmonitoring

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

    3. January 14, 2026 at 8:47 PM UTCresolved

      This incident has been resolved.

    Delays in audio read-aloud processing.

    Started January 5, 2026 at 5:17 PM UTC · 12h 19m

    Pending
    1. January 5, 2026 at 5:17 PM UTCinvestigating

      We're experiencing a delay in processing the automated read-alouds for posts in the apps.

    2. January 6, 2026 at 5:36 AM UTCresolved

      This incident has been resolved.

    Substack is experiencing issues

    Started December 22, 2025 at 11:31 PM UTC · 42m

    IssuesMinor incident
    Affected components
    Substack.com
    1. December 22, 2025 at 11:31 PM UTCinvestigating

      We are currently observing increased latency on Substack surfaces and are investigating the issue.

    2. December 22, 2025 at 11:52 PM UTCmonitoring

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

    3. December 23, 2025 at 12:13 AM UTCresolved

      This incident has been resolved.

    Substack is experiencing issues

    Started November 18, 2025 at 2:39 PM UTC · 38m

    IssuesMinor incident
    Affected components
    Writer dashboardsCustom domainsSubstack.comSubstack publications
    1. November 18, 2025 at 2:39 PM UTCinvestigating

      We are experiencing issues caused by a service provider, some access to Substack might be limited

    2. November 18, 2025 at 2:45 PM UTCmonitoring

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

    3. November 18, 2025 at 3:16 PM UTCresolved

      This incident has been resolved.

    Push notifications delayed on iOS

    Started November 5, 2025 at 4:52 PM UTC · 46m

    Pending
    Affected components
    Push Notifications
    1. November 5, 2025 at 4:52 PM UTCidentified

      We are experiencing delays due to a service provider outage.

    2. November 5, 2025 at 5:29 PM UTCmonitoring

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

    3. November 5, 2025 at 5:38 PM UTCresolved

      This incident has been resolved.

    Post emails delayed

    Started October 20, 2025 at 1:41 PM UTC · 11h 11m

    OutageMajor incident
    Affected components
    Email delivery
    1. October 20, 2025 at 1:41 PM UTCinvestigating

      We are experiencing delays with processing scheduled posts related to an outage from one of our service providers. Our team is investigating.

    2. October 20, 2025 at 1:49 PM UTCinvestigating

      We are also seeing issues with publication dashboards including partial outages across the subscriber tab and some statistics. We are working to mitigate.

    3. October 20, 2025 at 2:12 PM UTCidentified

      We are seeing recovery of our publisher dashboard functionality. Other service functions such as scheduled posts continue to be degraded.

    4. October 20, 2025 at 4:51 PM UTCidentified

      We continue to experience delays with processing scheduled posts related to an outage from one of our service providers. Users can publish posts manually to bypass this. Our team is still investigating.

    5. October 20, 2025 at 9:50 PM UTCmonitoring

      Scheduled post sends are operational and we have caught up with the backlog.

    6. October 21, 2025 at 12:52 AM UTCresolved

      This incident has been resolved.

    Post notifications are delayed

    Started October 4, 2025 at 4:06 PM UTC · 4h 22m

    IssuesMinor incident
    Affected components
    Push NotificationsEmail delivery
    1. October 4, 2025 at 4:06 PM UTCinvestigating

      We are experiencing delays in sending out email and push notifications for published posts.

    2. October 4, 2025 at 4:25 PM UTCidentified

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

    3. October 4, 2025 at 7:22 PM UTCmonitoring

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

    4. October 4, 2025 at 8:29 PM UTCresolved

      This incident has been resolved.

    Post email delivery is delayed

    Started September 20, 2025 at 2:42 PM UTC · 1h 43m

    Pending
    Affected components
    Email delivery
    1. September 20, 2025 at 2:42 PM UTCinvestigating

      We are currently investigating this issue.

    2. September 20, 2025 at 4:08 PM UTCmonitoring

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

    3. September 20, 2025 at 4:25 PM UTCresolved

      This incident has been resolved.

    Substack experiencing increased latency

    Started September 15, 2025 at 3:24 PM UTC · 3h 47m

    IssuesMinor incident
    Affected components
    Writer dashboardsCustom domainsEmail deliverySubstack.comSubstack publications
    1. September 15, 2025 at 3:24 PM UTCinvestigating

      We are currently investigating reports of increased latency and slow response times across Substack.

    2. September 15, 2025 at 3:34 PM UTCinvestigating

      We are continuing to investigate increased latency and error rates across Substack.

    3. September 15, 2025 at 3:42 PM UTCidentified

      We have identified an issue and are seeing normal performance across all systems.

    4. September 15, 2025 at 3:50 PM UTCidentified

      We are continuing to investigate increased latency and error rates across Substack.

    5. September 15, 2025 at 4:38 PM UTCidentified

      We are working to resolve the remaining performance issues across Substack and expect to see recovery shortly.

    6. September 15, 2025 at 4:46 PM UTCmonitoring

      We are seeing recovery of performance across Substack and are monitoring the issue.

    7. September 15, 2025 at 4:53 PM UTCmonitoring

      As part of the earlier incident, we are noting delays in analytics updating and post email delivery. We are working to resolve the issue.

    8. September 15, 2025 at 5:43 PM UTCidentified

      We are seeing recurrence of increased error rates and degraded performance across Substack.

    9. September 15, 2025 at 6:39 PM UTCmonitoring

      Substack is operating normally and our team is monitoring.

    10. September 15, 2025 at 7:12 PM UTCresolved

      This incident has been resolved.

    Delay in sending scheduled posts

    Started August 30, 2025 at 4:17 PM UTC · 15m

    Pending
    Affected components
    Email delivery
    1. August 30, 2025 at 4:17 PM UTCidentified

      We are investigating a delay in the sending of scheduled posts.

    2. August 30, 2025 at 4:30 PM UTCmonitoring

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

    3. August 30, 2025 at 4:32 PM UTCresolved

      This incident has been resolved.

    Livestream creation not working

    Started August 26, 2025 at 2:06 PM UTC · 39m

    Pending
    1. August 26, 2025 at 2:06 PM UTCinvestigating

      We are experiencing an issue with a service provider that is causing livestream creation to be broken.

    2. August 26, 2025 at 2:45 PM UTCresolved

      This incident has been resolved.

    Unable to sign in on the Android app

    Started August 11, 2025 at 4:15 PM UTC · 20m

    Pending
    1. August 11, 2025 at 4:15 PM UTCinvestigating

      We are currently investigating this issue.

    2. August 11, 2025 at 4:27 PM UTCmonitoring

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

    3. August 11, 2025 at 4:35 PM UTCresolved

      This incident has been resolved.