The document provides step-by-step instructions for setting up POP3 email in Mail on Mac OS X 10.7 and 10.8 using GTP email services. It outlines getting the necessary email account details, adding the account in Mail preferences, and configuring the incoming and outgoing mail server settings using mail.yourdomain.com.au and a custom port of 587 without SSL. Troubleshooting tips are provided to check the username contains the full email address and to contact GTP support if email is not working after following the steps.