Errors with Email Sending via the Worker Binding

Updates timeline

1. Investigating May 13, 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, 02:44 PM UTC

   We are continuing to investigate this issue.

3. Identified May 13, 03:30 PM UTC

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

4. Monitoring May 13, 10:24 PM UTC

   A fix has been implemented and we are monitoring the results.