Outage in Mailchimp
Campaign Click Tracking Issue
Resolved Minor
August 04, 2026 - Started 20 days ago
- Lasted 6 days
Incident Report
Summary AI Generated
Mailchimp experienced a click tracking failure lasting approximately 151 hours, during which campaign links were not tracked correctly. The issue affected campaign reporting for any campaigns sent between approximately 11:00 AM EST on August 3rd and 12:00 PM EST on August 4th. Tracking has since been fully restored, though click data from the affected window is permanently lost and cannot be recovered.
We have identified and resolved an issue due to campaign links not being tracked correctly. Tracking has been fully restored; however, click tracking during the affected window (starting around 11:00 AM EST on August 3rd to 12:00 PM EST on August 4th) cannot be backfilled. This will impact areas such as campaign reporting sent during this window. We sincerely apologize for the inconvenience.
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