Step Wise Manual Yandex mail settings for thunderbird
If you don't have a Yandex mail address. you can create an email id from here then you can Yandex 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, Yandex Email address and Password then press Continue.
Click on the Manual config menu at bottom.
Enter Below Yandex incoming server settings.
In incoming click on the dropdown menu and select SMTP.
Add server host :smtp.yandex.com
Port: 587
select SSL/TLS
Enter Below Yandex outgoing server settings.
In outgoing select IMAP.
Add server host :imap.yandex.com
Port: 993
select SSL/TLS
Tap on Done. Now you are ready to use your Yandex email account on your Thunderbird.