Step Wise Manual Katamail mail settings for thunderbird
If you don't have a Katamail mail address. you can create an email id from here then you can Katamail 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, Katamail Email address and Password then press Continue.
Click on the Manual config menu at bottom.
Enter Below Katamail incoming server settings.
In incoming click on the dropdown menu and select POP.
Add server host :pop.katamail.com
Port: 993
select SSL/TLS
Enter Below Katamail outgoing server settings.
In outgoing select SMTP.
Add server host :smtp.katamail.com
Port: 465
select SSL/TLS
Tap on Done. Now you are ready to use your Katamail email account on your Thunderbird.