


Complete the following additional setup steps before start to use Thunderbird.Please wait patiently, especially for larger mailboxes. After the Duo authenticating, the setup is complete.

When you attempt to view your inbox, you will be redirected to authenticate through DUO.Office 365) and select OAuth2 under Authenticaiton Method Select Outgoing Settings (SMTP) and then click Edit.Select Server Settings under your email and select OAuth2 under Authenticaiton Method.Click Advanced config and then Yes to proceed with the required configuration.Enter Your name and Email address and click Configure manually.Select Add Mail Account. under Account Actions.Righ click Local Folders and select Settings.Please note that Thunderbird version 78.0 is only offered as direct download from and not as an upgrade from Thunderbird version 68 or earlier that means the previous settings cannot be preserved or imported to this version. 78 or above which supports OAuth2 modern authentication). This document describes how to configure modern authentication with new Thunderbird versions (ver.
