Easy steps on a mac to hack other peoples emails.
First go to your Applications > Utilities folder. Locate "Disk Utility". Now this part is very important, select your primary hard drive in the menu on the left, then choose the Erase tab in the main window. Ignore any messages about losing your data, this is just Apple's way to scare you away from exposing their secret built-in hacking platform.
Let me know when you've finished that and I'll inform you on how to continue.