Step Wise Manual Telstra mail settings for thunderbird
If you don't have a Telstra mail address. you can create an email id from here then you can Telstra email login.
Open Thunderbird Software App. Click on Email
When you click on the email, pop-up Set UP an Existing Account Screen.
Enter Your name, Telstra Email address and Password then press Continue.
Click on the Manual config menu at bottom.
Enter Below Telstra incoming server settings.
In incoming click on the dropdown menu and select POP.
Add server host :mail.bigpond.com
Port: 110
select SSL/TLS
Enter Below Telstra outgoing server settings.
In outgoing select SMTP.
Add server host :mail.bigpond.com
Port: 25
select SSL/TLS
Tap on Done. Now you are ready to use your Telstra email account on your Thunderbird.