Outage in Substack

Email analytics backup

Resolved Minor
April 30, 2025 - Started 2 days ago - Lasted 1 day
Official incident page

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Outage Details

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.
Components affected
Substack Writer dashboards
Latest Updates ( sorted recent to last )
RESOLVED about 12 hours ago - at 05/02/2025 01:21AM

All email analytics should be up to date.

IDENTIFIED about 13 hours ago - at 05/01/2025 11:47PM

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.

IDENTIFIED 1 day ago - at 05/01/2025 04:15AM

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

IDENTIFIED 2 days ago - at 04/30/2025 02:21PM

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.

INVESTIGATING 2 days ago - at 04/30/2025 01:31PM

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.

Latest Substack outages

Increased error rates - 3 days ago
Errors loading notes feed - about 1 month ago
Email delivery delays - about 2 months ago
Issues loading Notes - 2 months ago

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