Observed authentication
See what one real message actually passed.
Public DNS shows policy. A received Authentication-Results header shows what the mailbox observed for a particular message.
Headers stay localParsing happens only in your browser.
Raw message headers
Paste the complete received headers
Copy the original message source from the receiving mailbox. Headers can contain email addresses, IPs, and message IDs—review them before sharing anywhere else.
This parser runs entirely in your browser. OpenBIMI does not receive or retain the pasted header.