Adding a Shared Mailbox to Mozilla Thunderbird

Purpose

This article helps users add a shared mailbox to Mozilla Thunderbird.

Procedure

• Click on the Settings Gear and go to Account Settings.

• Select Account Actions and click Add Mail Account.

• Enter the following in the “Set Up Your Existing Email Address” window:
  • Your Full Name: Use exact name of the shared mailbox (name will be displayed in your thunderbird folders)
  • Email Address: Email Address of the Shared Mailbox (complete with @utdallas.edu)
  • Password: Leave blank
  • Remember Password: uncheck

• Click Configure Manually.

• In the Manual Configuration, enter the following information into the available fields as shown below.
  • INCOMING SERVER
    • Protocol: IMAP
    • Server: outlook.office365.com
    • Port: 993
    • SSL: SSL/TLS
    • Authentication: Normal Password
    • Username: Shared Email Address
  • OUTGOING SERVER
    • Server: smtp.office365.com
    • Port: 587
    • SSL: STARTTLS
    • Authentication: Normal Password
    • Username: Shared Email Address
• Click Re-test.

• Server settings are confirmed when the green message “The following settings were found by probing the given server:” appears at the top of the window.

• Select Done.
• If it asks you to sign into the Shared Mailbox with a Password, click Cancel.

• Go to Account Settings > Mailbox Column > Shared Mailbox > Server Settings.

• Change “Authentication Method:” to OAuth2.

• Click on Mailbox Column > Outgoing Server (SMPT).
• Select the Shared Mailbox from list and click Edit.

• Change “Authentication Method:” to OAuth2 and set “Connection Security:” to STARTTLS.
• Click OK to save.

• Restart Thunderbird.
• You will be prompted to sign in with the Shared Mailbox’s UTD Password. Below the password text box, click “Sign-in with another account”.

• Log in with your NetID@utdallas.edu and regular password.

• Authenticate with Duo.
• Click on the Shared Mailbox’s Inbox and Thunderbird will start to load emails.