To configure your email account in Windows Mail, follow the steps described below -
Start Windows Mail. On the Tools menu, click Accounts...
In the Accounts window, click Add...
Select the Account Type as E-mail Account and click Next.
Enter your complete email address of the type user@somedomainname.com, your Password and Display Name as the name you want others to see when you send them a message.
Select the check box adjacent to Manually configure server settings for e-mail account and then click Next.
Select an incoming mail server as either POP3 / IMAP
Incoming server: You can obtain this information from your webmail interface by logging in at the URL of the form http://webmail.yourdomainname.com and going to Settings >> Forwarding and POP/IMAP settings
Outgoing server: Specify your outgoing mail server as the one mentioned in the web-based mail interface at http://webmail.yourdomainname.com under Settings >> Forwarding and POP/IMAP settings .
Select the checkbox adjacent to My outgoing server requires authentication, click Next and then Finish.
Your account is now configured to send and receive mails.