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In this guide, you will find instructions about setting up Mozilla Thunderbird.

When using cloud service, applying two-factor authentication is mandatory: Activating two-factor authentication.


NB! To use UT mailbox, the Thunderbird version must be at least 77. 
The latest Thunderbird can be downloaded from:

This guide is based on Mozilla Thunderbird version 102.12.0. Install the latest version if necessary!


  1. Open the Thunderbird application.
  2. Fill in as follows:
    1. Your full name: your first name and last name
    2. Email address: UT e-mail addres in the format
    3. Password: UT account password
    4. After entering the data, press the Continue button.
  3. The IMAP settings will be displayed, press the Done button.

    If there is a need to change the IMAP settings, select Configure manually.
  4. Enter your UT account password and click the Sign In button.
  5. Verify your identity using two-factor authentication.
  6. To allow the Mozilla Thunderbird applcation, select Accept.
  7. Mozilla Thunderbird has been set up successfully! Click the Finish button to complete the installation.
  1. Open the Thunderbird application.
  2. From the top-left tab, select Mail and select Set Up Another Account -> Email.
  3. Continue with the first time setup instructions in the first half of the guide.

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