Step Wise Manual St-tel mail settings for thunderbird
If you don't have a St-tel mail address. you can create an email id from here then you can St-tel 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, St-tel Email address and Password then press Continue.
Click on the Manual config menu at bottom.
Enter Below St-tel incoming server settings.
In incoming click on the dropdown menu and select SMTP.
Add server host :smtp.st-tel.net
Port: 25
select SSL/TLS
Enter Below St-tel outgoing server settings.
In outgoing select POP.
Add server host :pop3.st-tel.net
Port: 110
select SSL/TLS
Tap on Done. Now you are ready to use your St-tel email account on your Thunderbird.