Enail pogram

You can get online email for free without needing to install anything.

A good one is http://www.gmail.com

If you want to install a program for managing your emails, a good one is Microsoft Outlook. You can acquire it here:

http://office.microsoft.com/en-us/outlook/

http://www.gmx.com/

http://www.mozilla.org/en-US/thunderbird/