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Read Gmail Messages on Mozilla Thunderbird

The following instructions are for those who wish to access their TMU Gmail through a Thunderbird client with IMAP. These instructions are for Thunderbird 78. For Thunderbird support, please visit the help page (external link, opens in new window) .

By following the steps below, and using the settings provided, you will get access to your email.

When opening up thunderbird for the first time, a window like this should open.

Screenshot of the Thunderbird client welcome screen

Enter your name, email address, password and select Continue.

Screenshot of Thunderbird client mail setup

Next you will see Mail Account Setup screen where you will see the manual setting fields.

Screenshot of Thunderbird client mail setup

In the above screen, you will have to manually change the following fields:

Incoming: IMAP
Server host name:
Port: 993
Authentication: Normal Password

Outgoing: SMTP
Server host name:
Port: 465
Authentication: Normal Password

Username: (for both Incoming and Outgoing, make sure to use your own my.torontomu username)

After changing the fields, select Re-test.

Screenshot of Thunderbird client mail setup

After re-testing it once, change the authentication from Normal Password to OAuth2 and press Done.

Screenshot of Thunderbird client mail setup

Next you will see the TMU authentication page. Please use your my.torontomu username and password to login.

CAS login

 If instead of the TMU authentication page, you reach a page that says "we have detected that cookies are disabled in your browser." To enable cookies in the Thunderbird browser, go to the Options menu>Privacy tab.  Check off the setting "Accept cookies from sites".

Next, you will see the sync screen, select Allow.

You have now setup your TMU Account.

You can check Google’s  recommended client settings (external link) , and adjust your client's settings as needed.

Screenshot of the permissions page for Thunderbird client

After setting up your first email address you should see a window like this pop up, select "Set as Default".

Screenshot of Thunderbird client prompt to set the email as default.

Add Another Account to Mozilla Thunderbird

1. Click Local Folders on the left side of the screen.

Screenshot of Thunderbird client screen to add a new account

1. Click Email (under Accounts > Create a new account) and to set it up repeat the above mentioned section 'Setting up Thunderbird client using IMAP'.