This tutorial demonstrates how to configure Windows 8 Mail for CU-Boulder's Gmail.
You may need to enable IMAP for your account prior to configuration of your email client (https://mail.google.com). To do this:
In the Incoming (IMAP) email server field type imap.gmail.com and in the Outgoing (SMTP) email server field type smtp.colorado.edu.
*Note: It is best to let Windows Mail automatically fill in the Port field during configuration, as the number can range depending on your connection. If you run into any issues, try entering numbers, 465, 587, or 25 in the Port field.