Mail Detective
Mail Detective is a lightweight utility for macOS that identifies the geographic location (country and city) from which an email message was sent. Users drag an email from their mail client (Mail, Outlook, or other compatible programs) and drop it onto Mail Detective's window; the app then analyzes the message headers and returns the sender's geographic information. It is designed for email investigators, security-conscious users, and anyone curious about the origins of email correspondence.
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1 suggestionMail Detective appears to have been last updated around 2018, with no recent releases or public information about ongoing development. There is no confirmed native Apple Silicon build available. Since the app has not been actively maintained in several years and there is no clear path to a native version, it will stop launching entirely when Apple removes Rosetta 2 in macOS 28 (September 2028). Modern email clients like Apple Mail, Outlook for Mac, and Gmail already include basic sender information and security warnings in their headers, so you may not need a dedicated tool for this task. If you require detailed email header analysis or geolocation features for legitimate security or investigation work, consider using web-based email header analyzers (mxtoolbox.com, mail-tester.com) or exploring your mail client's built-in header inspection tools before September 2028.
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