Get Thunderbird

You can obtain a free download of Thunderbird from the Mozilla website at - https://www.thunderbird.net/en-US/

Set up your Office 365 account

After installing Thunderbird:

Thunderbird may fail the initial attempt to configure your account settings.  Proceed with entering the following information in the manual/advanced configuration page presented.

Incoming Server Settings

Outgoing Server Settings

Username (Incoming and Outgoing):  your email address (e.g., yourusername@austin.utexas.edu)

Click Done

If you didn't save your word, you will be prompted for your UT Office365 (EID) password