オリジナル投稿者： Dan ,
Sorry TimeMachine is not able to resolve to that level but you can still achieve a backup of your mail. For Apple Mail exporting it to a backup file. Go to the file menu 'Mailbox' and slide down to 'Export Mailbox...' There you can select all or a few of your mailbox's. For Outlook you can likewise do the same thing exporting your mail file. In either case you'll need to copy them off your drive or select the external drive.