FAQ

Common questions about Email Header Analyzer.

What is an email header and why should I analyze it?

Email headers are hidden metadata that record the path an email took from sender to recipient. Analyzing them reveals the true sender IP, mail servers, and authentication results, helping you detect spoofing or phishing.

What do SPF, DKIM, and DMARC mean?

SPF verifies the sending server's IP is authorized for the domain. DKIM checks a cryptographic signature to ensure the message wasn't altered. DMARC ties SPF and DKIM to the From domain and tells you what to do if they fail.

Can this tool tell me if an email is definitely fake?

It provides strong indicators: failed authentication, mismatched sender IPs, or suspicious routes. However, always combine with other checks and never click links or attachments from untrusted sources.

Is my email header data stored or shared?

No. All parsing happens locally in your browser. Your data never leaves your device and is not sent to any server.