Mozilla Thunderbird for Mac

Double click on the Thunderbird icon from your Dock or from your Applications folder

Click on the Tools menu, then click on Account Settings

Click on Add Account at the bottom right hand side of the screen

Select Email account then click Continue

In the Your Name box, type in your name, this will be displayed on emails you send out.
In Email Address type in your full email address, eg username@shoal.net.au
Click on the Continue button

The type of incoming server you are using is a POP
In the Incoming Server box type mail.shoal.net.au
In the Outgoing Server box type mail.shoal.net.au
Click on the Continue button

The Incoming User Name should be the FULL email address, eg username@shoal.net.au
Click on the Continue button

Account Name can be anything you like, or you can just leave it as the email address
Click on the Continue button

You will now see all the details you have entered, click on the Done button

The mail account is now setup.

When you first go to check the mail, it will ask for the Password, when it does, enter your password, remembing it is CAsE SeNsiTivE
If you want the Password to be remembered, put a tick in the Use Password Manager to remember this password box then click OK

It will then bring up an Alert, Click on the OK button