Mail Detective tries to determine the geographical origin of email messages in your INBOX via geolocation by parsing the message headers for the sender's IP address. Simply drag the email from your mail program and drop it onto the app’s window - Mail Detective will tell you the country and, if this information is available, the city from which the email was sent.

If your mail program does not support Drag and Drop of messages, you can also copy the email headers and paste it into the app.

Please note that Mail Detective will need internet access to work. If the message is older than 24 hours, the city of origin may be outdated and no longer be correct. In the cases where the sender has used a generic email provider, such as iCloud or Gmail, Mail Detective may not always be able to trace the email back to the sender. In those cases, the location of the webmail service will be displayed.

What’s New

Version 1.3.1

Mail Detective now supports Dark Mode on macOS Mojave.

Ratings and Reviews

1.3 out of 5
3 Ratings

3 Ratings

xlza ,

Won't open anymore...

It worked for about a year… dialog box says it's damaged… throw it away… Log out of app store. Restarted… logged back into app store… went to purchased… downloaded app… crashed again.
Sense the support email help file is in the menu of the app. No way to contact author.

Any help with this would be appreciated.

Developer Response ,

Problems with damaged App Store apps can often be resolved by restarting the Mac, as this will update App Store related internal caches. Please note that I have released an update in the meantime, so make sure to update the app to the latest version.

General hint: To request support for any App Store app, click on the "App Support" link on the App Store product page. This will take you to the dev's website.

Mac Owner Since 1984 ,


Mostly locates server farms where mass re-routing occurs. I quess you would say it needs little a more work to be viable.…why yes, yes you would.

I will change my ratings and review given any positive changes to this app.


Stefan Keller
1.9 MB

OS X 10.9.0 or later, 64-bit processor


English, German

Age Rating
Rated 4+
© 2014—2019 Stefan Keller,


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