If you have not done so, download and install the latest version of Thunderbird. This will only work with the latest version.
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UMD existing email account
- Make sure that IMAP is enabled for your UMD email account.
- Open Thunderbird. From the menu, navigate to File - > New -> Existing Mail Account.

- Enter your name and Email address.
If you are using a Mac computer, click Manual config.

From a Windows computer, click Continue.

- At first, Thunderbird will not be able to log into UMD email. On the next screen, fill in the settings for Incoming, Outgoing, and Username. Click Re-test.
- Incoming IMAP: Server hostname is imap.gmail.com, SSL/TLS.
- Outgoing SMTP: Server hostname is smtp.gmail.com, SSL/TLS.

- Change the Authentication for IMAP and SMTP to OAuth2. Click Done.

- You will be prompted to sign in with your UMD Google Account. Enter your full email address. Click Next.

- On the next screen, click Organizational Google Workspace Account.
- Log in using Duo. Click Allow to give Mozilla Thunderbird email access to your Google account.

- You will be prompted again to log into your Gmail account (step #6, above). This second authentication is necessary for sending email. You should be all set up to send and receive UMD email from Mozilla Thunderbird.
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Read without an email account
To read the mailbox file without an account, you must set a fake account.
- Enter values in the name and email address for Setting up an Existing Email Address. Use something similar to example.com as the email address. Click Configure manually.

- On the next screen, click Advanced config.

- Click OK to confirm the fake email address set up.

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