Cloudflare incident

Errors with Email Sending via the Worker Binding

Minor Ongoing View vendor source →

Cloudflare is currently experiencing a minor incident affecting Email Sending, which began 2h ago. The vendor's full update timeline is below.

Started
May 13, 2026, 02:39 PM UTC
Resolved
Ongoing
Duration
● 1h 46m
Detected by Pingoru
May 13, 2026, 02:39 PM UTC

Affected components

Email Sending

Update timeline

  1. 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.

  2. investigating May 13, 2026, 02:44 PM UTC

    We are continuing to investigate this issue.

  3. identified May 13, 2026, 03:30 PM UTC

    The issue has been identified and a fix is being implemented.