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Outage in Mailchimp

Campaigns not sending as expected

Resolved Major
April 14, 2026 - Started 1 day ago - Lasted about 19 hours

Incident Report

Summary AI Generated

Mailchimp experienced a major incident where email campaigns appeared to be sending in the system but were not actually being delivered to recipients. The issue affected campaign delivery functionality for 18.6 hours. The engineering team investigated and resolved the problem that was preventing campaigns from sending despite showing a sending status.

We are currently aware of and investigating an issue with campaigns showing as sending but not being sent. Our Engineering team is working on a resolution and we will provide further updates as they become available.

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Latest Mailchimp outages

Application Maintenance - about 1 month ago
Segmentation issues - about 2 months ago
Templates Missing - about 2 months ago
Campaign Reports - 2 months ago

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