(1). Access your control panel for your domain name - http://yourdomain.com/cpanel
If your domain has not yet propagated , access the domain's cpanel by using the server's IP/cpanel with that domain's username and password.
(2). Choose "Manage Accounts " -

(3). Then choose "Add Account" down the bottom of the page -

(4). Then add your email username and password then press "Create" -

Your email account has now been created on the server. Now you will need to setup and configure your Outlook Express as follows -
(1). Access your Outlook Express and click on "Tools" -

(2). Then click on "Accounts" -

(3). Then click on "Mail" -

(4). Then add your name -

(5). Then add your email address -

(6). Then add in your mail servers - for smut, use the SMTP server your ISP provided with your internet service.

(7). Then add your username and password. Remember, your username is your full email address -

(8). Then click finish.

(9). Also make sure that you tick the following "My server requires authentication" as per -

Your email is now setup. Your domain will need to be fully propagated , before your email will function. Send some test emails to some other email accounts of yours. Also test that you can receive emails to your new email account.