1. Open the finder to your home folder
    Screen Shot 2015-10-14 at 10.55.45
  2. In the Menu bar, select ‘View’ -> ‘Show View Options’
    Screen Shot 2015-10-08 at 16.28.00
  3. Enable ‘Show Library Folder’
    Screen Shot 2015-10-08 at 16.28.46
  4. Your home folder should now display the ‘Library’ folder and you should be able to add mail folders (‘~/Library/Mail/V3’)
    Screen Shot 2015-10-14 at 11.06.12
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