Microsoft Outlook Express

With Microsoft Outlook Express open, click on the "Tools" menu, then click on "Accounts...":

Click on the "Add >" button, then click on "Mail..." in the menu that pops up:

Enter the name you want displayed when you send email. Click "Next >".

Enter the POP email address you created for your WebMail account. Click "Next >".

Make sure that "POP3" is selected. Enter mail.yourdomain.com as both the incoming and outgoing servers. Click "Next >".

Enter the POP email address in the "Account name:" box. Enter the password for this POP account in the "Password:" box and make sure "Remember password" is checked if you want Outlook Express to remember your password for you. "Log on using Secure Password Authentication (SPA)" must be unchecked. Click "Next >".

Click "Finish".

Click the "Mail" tab.

Click on the name of the account you just created and click "Properties".

Click on the "Servers" tab in the window that pops up.

Check the "My server requires authentication" checkbox. Click "OK".

If you will be using your WebMail POP account as your primary email account, click "Set as Default". The new account's Type should change from "mail" to "mail (default)".

Click "Close" and you're done! You can now send and receive email using your new POP email account.