Windows 8's bundled mail program doesn't support POP. ..
Microsoft's own Windows Mail–part of the Windows Essentials collection of free tools–with a POP-only account. It worked fine. (I used Windows Mail because it's free and I'm familar with it ..

http://www.pcworld.com/article/2023005/answer-line-how-do-i-get-pop-email-in-windows-8.html

http://windows.microsoft.com/en-US/windows-live/essentials-home

http://windows8pop3email.com/