Mail Detective Support FAQ
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Some of my apps can be purchased from my payment provider FastSpring. At the moment, all of my apps are also available on the Mac App Store. If you are new to the Mac App Store, read this article to learn how to purchase apps from Apple.
If Mail Detective suddenly fails to launch without further notice or if you get an error alert, saying that the app is damaged and needs to be reinstalled from the Mac App Store, then restart your Mac. Then launch the Mac App Store and sign in. If the problem still exists, move the app to the trash, then empty the trash. Launch the Mac App Store again, click on the "Purchased" icon in the window's title bar and reinstall the app from there.
For faster and more accurate results, you should allow the app to access a dedicated web service running on geoip.subclassed.com at port 80. This service is maintained by the developer of the app. Only the IP address of the email's sender that you want to trace will be submitted.
When a user drags an email onto Mail Detective's window, Apple Mail creates a hidden file that Mail Detective then reads in. Apple Mail usually takes the message subject as the file's name. In rare cases, Apple Mail fails to save this file to disk because the file name is too long or contains characters that are not allowed in file names.
If this happens, choose View > Message > Raw Source from Mail's menubar. Then select the entire message source so that is highlighted, make a right-click on it and choose Services > Trace Sender In Mail Detective from the context menu.
Alternatively, choose File > Save As… from Mail's menubar and try to save the message to your Desktop (format: Raw Message Source) using a proper file name. Then drag the saved .eml file onto Mail Detective.