This download is hosted externally.
Thunderbird will automatically obtain mail server settings based on your location when you set it up for the first time.
If you plan to use Thunderbird to access your RedbirdMail both on campus and off campus, then you should use MailVPN settings.
For more information, refer to 561: Configuring Thunderbird with campus or MailVPN settings.
Illnois State University Office 365 Email
Thunderbird can also be configured for your Office 365 Email account.
For more information, refer to 1473: Configuring Thunderbird with Office 365 email.