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