Resolved after 22 hours 21 minutes, affecting Follow Up Boss Web Application and API, on March 23, 2026.
This issue has been resolved. If you are still experiencing Mailchimp connectivity issues in Follow Up Boss, you may need to visit Admin -> Integrations -> Mailchimp in FUB and re-select your Mailchimp list.
Affected components
Update timeline
- investigating Mar 23, 2026, 03:37 PM UTC
We are currently experiencing a service disruption. We are working to identify the root cause and implement a solution. This disruption is affecting a broad number of customers and features of Follow Up Boss. We will post updates here as they become available.
- investigating Mar 23, 2026, 03:42 PM UTC
We are investigating an issue where customers who use the Mailchimp integration are experiencing disconnection. There is no widespread interruption of Follow Up Boss at this time - this issue is limited to Mailchimp. We will post updates here as we identify the issue and a resolution.
- identified Mar 23, 2026, 08:30 PM UTC
We have identified the issue and a fix has been implemented. We are observing recovery for many customers and are continuing to monitor for a full recovery.
- resolved Mar 24, 2026, 01:58 PM UTC
This issue has been resolved. If you are still experiencing Mailchimp connectivity issues in Follow Up Boss, you may need to visit Admin -> Integrations -> Mailchimp in FUB and re-select your Mailchimp list.
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