SPF, DKIM, DMARC, and ARC summary
Email authentication inspector
Turn dense headers into readable signals.
Open an EML or MSG, preserve the raw header view, and summarize the authentication results that survived in the saved file.
Free · private · no uploads · no accountDrop an email to inspect its safety signals
Drop it here or choose it from your computer.
MSGEMLEMLXWINMAIL.DATMBOX
Processed locally. Your file never leaves this browser.
How it works
Three steps. No detour through a server.
- 1Choose the email file
- 2Review authentication results
- 3Compare the summary with the raw headers
Raw values remain available
Missing results are never treated as automatic failure
Straight answers
Common questions
Why might authentication results be missing?
Some MSG files, exports, and forwarding workflows do not preserve the original internet headers.
Can a pass prove the sender is legitimate?
No. Authentication can show that a sending domain authorized a message, but it does not establish that the sender or content is trustworthy.