Step Wise Manual Charter mail settings for thunderbird
If you don't have a Charter mail address. you can create an email id from here then you can Charter 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, Charter Email address and Password then press Continue.
Click on the Manual config menu at bottom.
Enter Below Charter incoming server settings.
In incoming click on the dropdown menu and select IMAP.
Add server host :imap.charter.net
Port: 143
select SSL/TLS
Enter Below Charter outgoing server settings.
In outgoing select SMTP.
Add server host :smtp.charter.net
Port: 25
select SSL/TLS
Tap on Done. Now you are ready to use your Charter email account on your Thunderbird.