Mailchimp Outage History
14 incidents recorded over the last 365 days, 14 of them resolved. Durations are measured from when PulsAPI first saw the problem to when it cleared, which is usually longer than the vendor's own figure.
Every Recorded Mailchimp Incident
| Date | Incident | Duration | Status |
|---|---|---|---|
| Aug 4, 2026 | Campaign Click Tracking IssueUpdate 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… | 28h 2m | Resolved |
| Aug 4, 2026 | Campaign Reports Page Displays 0% Opens and ClicksInvestigating We are currently aware of and investigating an issue with campaigns showing 0% Opens and 0% Clicks. Our Engineering team is working on a resolution and we will provide further updates as they become… | 2h 14m | Resolved |
| Jul 22, 2026 | Issue with Contacts Entering Mailchimp Flow AutomationsInvestigating We are currently aware of and investigating an issue with contacts not entering Flow Automations after signup for a subset of Mailchimp accounts. Our Engineering team is working on a resolution and we will… | 294h 26m | Resolved |
| Jun 24, 2026 | Mailchimp Transactional ErrorsUpdate We're seeing improvements with Mailchimp Transactional (formerly Mandrill) connectivity issues and sending delays. Our Engineers continue to work diligently on a fix. Thank you for your patience. Posted: Wed, 24… | 966h 37m | Resolved |
| Jun 23, 2026 | Mailchimp Transactional ErrorsUpdate We're seeing improvements with Mailchimp Transactional (formerly Mandrill) connectivity issues and sending delays. Our Engineers continue to work diligently on a fix. Thank you for your patience. Posted: Tue, 23… | 990h 11m | Resolved |
| Jun 3, 2026 | Google Service DisruptionInvestigating We are currently experiencing service disruptions due to an ongoing Google outage that is affecting parts of our infrastructure. Our team is actively monitoring the situation and working to minimize impact… | 1473h 45m | Resolved |
| May 14, 2026 | Contact count discrepanciesInvestigating We are currently aware of and investigating an issue with Contact count discrepancies on our Audience Analytics and Home Page. Contact table numbers are not affected. Our Engineering team is working on a… | 1948h 5m | Resolved |
| May 8, 2026 | Campaigns Stuck SendingUpdate Our engineering team is working on a fix right now. Once this is resolved, your campaign/s should finish sending automatically so please avoid replicating to prevent duplicate sends. Additionally, any new… | 2089h 48m | Resolved |
| May 1, 2026 | Issues with SegmentingUpdate We're seeing improvements with Segmentation and sending of new Campaigns. Any Campaigns currently stuck in a "processing" status will be retried automatically. Thank you for your patience. Posted: Fri, 01 May… | 2261h 4m | Resolved |
| Apr 30, 2026 | Exports stuck and/or failing to completeUpdate Our Engineering team has made an update to a subset of exports that had failed but not had their processing status updated in-app, causing them to reflect as pending. Affected exports have been moved to a Failed… | 2284h 52m | Resolved |
| Apr 28, 2026 | Segmenting and Campaign Builder Checklist IssuesUpdate We're seeing improvements with Segmentation and sending of new Campaigns. Any Campaigns stuck in a processing status due to a queue backlog will be retried automatically. Posted: Tue, 28 Apr 2026 17:41:00 +0000… | 2332h 13m | Resolved |
| Apr 27, 2026 | eepUrl Shortening IssuesInvestigating We are currently aware of and investigating an issue with eepurl shortening. Our Engineering team is working on a resolution and we will provide further updates as they become available. Please use the… | 2360h 9m | Resolved |
| Apr 24, 2026 | Campaigns Stuck SendingUpdate Our engineering team has confirmed that campaigns are being sent successfully, though you may notice a visual discrepancy in your account regarding sending status. Please disregard these dashboard delays while… | 2428h 8m | Resolved |
| Apr 14, 2026 | Campaigns not sending as expectedUpdate At around 10 AM EST today, we began receiving reports of campaigns getting stuck in "Sending" status. Our engineering team is working on a fix right now. Once this is resolved, your campaign/s should finish… | 2665h 52m | Resolved |
How to Read This Mailchimp Incident Log
Each row is an incident PulsAPI observed, not a summary written afterwards. The duration is wall-clock time between the first failing check and the first clean one, so it includes the window before Mailchimp acknowledged anything. Vendor post-mortems typically measure from acknowledgement, which is why their numbers are usually shorter.
Incidents still open have no duration yet and are listed as ongoing rather than being given a running total. The archive covers the last 365 days; anything older has aged out of the window rather than never having happened.
The longest single Mailchimp outage in this window ran 111d 1h, against a mean recovery of 65d 20h. If you depend on Mailchimp in a customer-facing path, the longest figure is the one to design around. The mean is what happens on a normal bad day; the maximum is what happens on the worst one.