Wiseowl tools
Email Header Analyzer
Wondering where an email came from, or why it took its time getting here? Paste its headers and we’ll turn the technical bits into a readable overview.
Let’s take a look
Analysis happens in your browser. This tool doesn’t upload or store your pasted headers. Maximum size: 200 KB.
Finding your headers
In Outlook on the web, open the message, select the three-dot menu, then look for View message details (sometimes under View). In Gmail, use the message’s three-dot menu and choose Show original. Copy the header section into the box above.
Headers can contain email addresses and internal server names. Take a moment to remove anything private before sharing an analysis with someone else.
Technical reference: Authentication-Results (RFC 8601).