Resolved after 14 hours 9 minutes, affecting Email Sending, on May 13, 2026.
A fix has been implemented and we are monitoring the results.
Affected components
Email Sending
Update timeline
- investigating May 13, 2026, 02:39 PM UTC
Cloudflare is investigating issues with Email Sending via the Worker Binding where an error message "Invalid email address: Invalid input" can be returned if the recipient list is an array. More updates to follow soon.
- investigating May 13, 2026, 02:44 PM UTC
We are continuing to investigate this issue.
- identified May 13, 2026, 03:30 PM UTC
The issue has been identified and a fix is being implemented.
- monitoring May 13, 2026, 10:24 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved May 14, 2026, 04:48 AM UTC
This incident has been resolved.
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