What you'll need to know:

1. Account name, which is simply you email address.
2. Your password
3. Incoming mail server (POP3): pop.yourdomain.co.uk
4. Outgoing mail server (SMTP): smtp.yourdomain.co.uk

How to setup in Windows Mail and Outlook Express:

1. Click Tools (menu at top of the screen) and then Accounts
2. Click Add, Email Account should already be selected on the window that opens, and click Next
3. Enter your name or business name, click Next
4. Enter the full email address for the account you are adding (eg: yourname@yourdomain.co.uk), click Next
5. POP3 should already be selected, enter the incoming and outgoing server.
6. Tick the box Outgoing server requires authentication and click Next
7. Enter your username and password and click Next
8. Click Finish and you're all done. Repeat these steps for any other email accounts.

Notes for other mail clients: The outgoing server requires authentication to send email, and the Account Username and Password are the same as above. This will need to be set on the account settings within your mail client. The incoming port is 110 and the outgoing port is 25, these two settings are the default for most email clients.