Note: You will have to enter your Administrator password after the first command. Sudo defaults write '/Library/Preferences/' EnableBundles 1ĭefaults write EnableBundles -bool trueĭefaults write BundleCompatibilityVersion 4 If you are using macOS 10.14 or higher, type:
Create the Bundles folder if it does not already exist.
To install and configure MsgFiler, follow these instructions: Many upgrades of macOS and MacOS X remove all Mail bundles after upgrading. MacOS Big Sur, Catalina, and Mojave Usersīe sure to read the installation instruction step 9, as you will need to turn on plug-ins within Mail’s Preferences to enable MsgFiler Classic.