Note: Replace yourdomain.co.za with the domain of your account

1. Open Thunderbird, and select Tools > Account Settings.
2. Click Add Account.
3. Select the Email account radio button and click Next. The Identity screen appears.
4. Enter your full name in the Your Name field. Enter your full email address (username@yourdomain.co.za) in the Email Address field, and click Next.
5. Select POP as the type of incoming server you are using. Enter mail.yourdomain.co.za in the Incoming Server field.
6. Set the Outgoing Server to mail.yourdomain.co.za, and click Next.
7. Enter your email username (including @yourdomain.co.za) in the Incoming User Name and Outgoing User Name fields, and click Next.
8. Enter a name for your email account in the Account Name field, and click Next.
9. Verify your account information in the dialog box, and click Finish.
10. Select Server Settings from the folder list below your new account.
11. Select Check for messages at startup and Automatically download new messages
12. Click Outgoing Server (SMTP) in the folder list
13. Select the mail.yourdomain.co.za (Default) entry from the list and click Edit. The SMTP Server page appears.
14. Enter mail.yourdomain.co.za as the Server Name and set the Port to 587.
15. Select Use name and password and enter your email username (including @yourdomain.co.za) in the User Name field.
16. Click OK to save your changes and exit the Account Settings dialog.