Private Email account setup in Thunderbird - Email service - Namecheap.com
Why does my Thunderbird not connect to the Gmail SMTP server? | Thunderbird Support Forum | Mozilla Support
Facing issues with thunderbird sending an email. - Techyv.com
SMTP server connection timed out.
Getting this error message: The message could not be sent because the connection to Outgoing server (SMTP) smtp.gmail.com was lost in the middle of | Thunderbird Support Forum | Mozilla Support
Thunderbird for Mac: Adding ECN SMTP as Outbound Server - Engineering Computer Network - Purdue University