In the Main group, choose the File Manager icon. From the File menu, choose Copy. 4. Choose the OK button. How you edit the file depends on whether you created a WGPO or connected to one. You can create message files in addition to your primary message file by using the Backup command or the Export Folders command.
Mail starts offline, and then opens the specified message file insteadofyourprimary message file.
To revert to your primary message file, start Mail without using the f option.