Open up Mozilla Thunderbird, then click on the Tools menu at the top of the window, select Accounts Settings ... from the drop-down menu.
Click Add Account ... button.
Choose Email account in the New Account Setup window and click Next.
Entering the following information in the next sections:
Your Name: Your name (Used on all mail to identify you as the sender).
Email Address: This is the email address that you want to use.
Click Next.
Server type: Select POP
Incoming Server: pop3.yourdomain.name (change to the domain you wish to use).
It is up to you whether you select the Use Global Inbox setting.
Outgoing Server: smtp.yourdomain.name (change to the domain you wish to use).
Click Next.
Account Name: This is just a reference for yourself.
Click Next.
Verify that all the setting you entered are correct and then click Finish.
To check for email, simply click Get mail button. To start a new email, click Write.
The first time you check for email, you will be prompted for your password. This will be your pop3 password.
N.B. If you are unsure of your username or password, they can be found within the Email l > POP3 Logins > Manage section ofthe control panel (http://cp.xcalibre.co.uk)