Step Wise Manual Zen mail settings for thunderbird
If you don't have a Zen mail address. you can create an email id from here then you can Zen 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, Zen Email address and Password then press Continue.
Click on the Manual config menu at bottom.
Enter Below Zen incoming server settings.
In incoming click on the dropdown menu and select POP.
Add server host :mailhost.zen.co.uk
Port: 995
select SSL/TLS
Enter Below Zen outgoing server settings.
In outgoing select SMTP.
Add server host :mailhost.zen.co.uk
Port: 587
select SSL/TLS
Tap on Done. Now you are ready to use your Zen email account on your Thunderbird.