*24 Jan 2015* <div class="posthaven-post-body"> If you use \[GPGMail\](https://gpgtools.org) (look it up if you don't know about email privacy ;)), and migrated to OSX Mavericks preview, then you know it does not work out of the box. Here's how to trick the operating system to make it work: \- Quit Mail; - Download and \[install this fix\](http://support.gpgtools.org/discussions/everything/10837/r?go=aHR0cHM6Ly90LmNvL0VESlBRUVFUVGw=); - Run this sequence of commands: \$ sudo defaults write /Library/Mail/Bundles/GPGMail.mailbundle/Contents/Info.plist SupportedPluginCompatibilityUUIDs -array-add "\$(grep -A 1 "PluginCompatibilityUUID" /Applications/Mail.app/Contents/Info.plist \| grep string \| cut -f 2 -d "\>" \| cut -f 1 -d "\<")" \$ sudo chown -R root:staff /Library/Mail/Bundles/GPGMail.mailbundle \$ sudo chmod -R ug+r /Library/Mail/Bundles/GPGMail.mailbundle \$ sudo chmod 644 /Library/Mail/Bundles/GPGMail.mailbundle/Contents/Info.plist Keep in mind that on some shells the first command will not work (i.e. \[fish\](http://fishshell.com)). If that's the case, first switch to another one (bash,sh,csh,zsh) then run the commands. Restart Mail and it should work. </div> [[tags/fix|fix]] [[tags/gpg|gpg]] [[tags/mac|mac]] [[tags/mail|mail]] [[tags/mavericks|mavericks]] [[tags/osx|osx]] [[tags/tools|tools]]