Why did this email fail?
Paste the headers of a message and see whether SPF, DKIM and DMARC passed, and the reason in plain English. Free, no account. The text is checked and not saved.
| Check | Our result | Receiver reported |
|---|
Why
How to get the headers
- Gmail: open the message, click the three dots, then Show original.
- Outlook: open the message, then View, then View message source.
- Apple Mail: open the message, then View, Message, All Headers.
Headers can contain names and addresses, so paste only messages you are allowed to share.