Office 365

Configuring Mozilla Thunderbird

To set up a new account

Note: These instructions assume you are running a version of Thunderbird 77.0b1 or later which supports OAuth2 modern authentication.

1. The Mail Account Setup dialog box should open the first time you open Thunderbird.
    a. If it does not open:
        i. Locate the Menu button in the top right corner.
        ii. Click Menu > Account Settings...
        iii. On the Account Settings page, under Account Actions, click Add Mail Account.
2. In the Mail Account Setup dialog box, enter the following information:
    a. Your Name: enter the name you want on the "From" line in your outgoing messages
    b. Email Address: enter your @usf.edu email address
    c. Password: enter your @usf.edu email password
    d. Make sure the Remember password box is checked

Initial Settings for Thunderbird

3. Click Configure Manually
4. Enter the following information:
     a. Incoming server hostname: outlook.office365.com
     b. Outgoing server hostname: outlook.office365.com
     c. Username: enter your @usf.edu email address
     d. Change the Incoming Port field to 993 and the Outgoing Port field to 587.
     e. Change the Incoming SSL field to SSL/TLS and Outgoing SSL field STARTTLS.

Manual Configuration for Thunderbird

5. Once this information is filled in, select Advanced Config and then click OK in the popup.

Selecting Advanced Config in Thunderbird

6. In the Authentication Method dropdown menu, select OAuth2.

Setting the Incoming Authentication Method in Thunderbird
7. Select the Outgoing Server (SMTP) section in the left bar, click on your email address and click Edit.

8. In the Authentication Method dropdown menu, select OAuth2.

Setting Outgoing Authentication Method to OAuth2.
9. Restart Thunderbird. Once it restarts, it should prompt you to log in and accept MFA unless you have already done so.

To change the settings on an existing account

Note: These instructions assume you are running a version of Thunderbird 77.0b1 or later which supports OAuth2 modern authentication.

1. Open Thunderbird.
2. Locate the Menu button in the top right corner.
3. Click Menu > Account Settings...
4. Click Server Settings under your @usf.edu email.
5. Enter the following information:
     a. Server Name: outlook.office365.com
     b. Port: 993
     c. User Name: your @usf.edu email address
     d. Select SSL/TLS from the Connection security dropdown menu
     e. Select OAuth2 from the Authentication method dropdown menu
6. Open the Outgoing Server (SMTP) menu. Open the server for your @usf.edu email.
7. Click Edit...
8. Enter the following settings:
     a. Server Name: outlook.office365.com
     b. Port: 587
     c. Select STARTTLS from the Connection security dropdown menu
     d. Select OAuth2 from the Authentication method dropdown menu
     e. User Name: your @usf.edu email address
9. Click OK.
10. Click the Get Messages button.
11. Enter your @usf.edu email password when prompted. Check the box to Use Password Manager to remember this password and click OK.