[ Free tool · Analyzers ]
Email Header Analyzer
Paste a message header and see why it passed or failed DMARC.
[ About this tool ]
This email header analyzer parses raw message headers to show SPF, DKIM and DMARC results, alignment and each delivery hop.
How to read the results
- ›Authentication-Results shows the receiver's verdicts.
- ›dmarc=pass needs an aligned SPF or DKIM pass.
- ›Large gaps between Received hops indicate delays.
Frequently asked questions
How do I view email headers?
In Gmail use More > Show original; in Outlook open the message and choose View > Message source or Properties.
Is it safe to share email headers?
Headers include email addresses and IP addresses, so share them only with people you trust.
Learn more in our guide: Email Deliverability: How to Reach the Inbox, Not Spam
Enterprise provenance
Why top financial institutions and governments retired their email security dashboards.
Traditional email authentication platforms sell you a dashboard and ask your engineers to do the labour. In high-stakes environments, manual oversight means delayed enforcement, configuration drift and unmonitored shadow domains.
EmailAuth is the agentic email provenance platform. Our agents enforce p=reject, keep third-party senders aligned and move your domains to full RFC 9989 compliance, the new DMARC standard,, with human-in-the-loop auditability.
SaaS · Dedicated tenancy · Air-gapped on-prem · BYOK encryption
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