EMAIL & AUTHENTICATION ·
headers:Email Header Analyzer
Paste raw email headers to trace the delivery path, delays and SPF/DKIM/DMARC authentication results.
About the Email Header Analyzer
Paste the raw headers of a message (in Gmail: “Show original”; in Outlook: “View message source”) and the analyzer reconstructs its journey: every Received: hop with the sending and receiving servers, protocol, timestamp and the delay introduced at each step. It then decodes Authentication-Results, Received-SPF, ARC and DKIM-Signature headers to show whether SPF, DKIM and DMARC passed and which domains aligned.
Typical uses
- Find where a slow message was held up.
- Confirm whether a suspicious message really came from the claimed domain.
- Extract the DKIM selector and originating IP to run further checks.
Headers are processed in memory and are not stored.