Substack experienced a minor incident on April 30, 2025 affecting Writer dashboards, lasting 1d 11h. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- 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.
- 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.
- 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.
- 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.
- resolved May 02, 2025, 01:21 AM UTC
All email analytics should be up to date.