Errors with Email Sending via the Worker Binding
Components
Regions
Errors with Email Sending via the Worker Binding Cloudflare operates global DNS, CDN, WAF, and edge network services. Outages here often affect many sites and APIs that sit behind their network.
resolved · 14 May 2026, 04:48 UTC
This incident has been resolved.
monitoring · 13 May 2026, 22:24 UTC
A fix has been implemented and we are monitoring the results.
identified · 13 May 2026, 15:30 UTC
The issue has been identified and a fix is being implemented.
investigating · 13 May 2026, 14:44 UTC
We are continuing to investigate this issue.
investigating · 13 May 2026, 14:39 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.
5
Related incidents
14h 9m
This incident
3h 35m
Avg. resolution time
Slower
vs. average
If your product depends on Cloudflare, elevated errors during this window often come from upstream, not from your latest commit.
Open official status pageBe the first to know when we launch Pro alerts. No spam — only product updates.
Interested in
This outage lasted 14h 9m. Join the waitlist to get alerted next time.
Join the waitlist for Pro alerts — we'll notify you at launch.