Mozilla Thunderbird Macos

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This article describes how to install Thunderbird on Mac. For other operating systems, see Installing Thunderbird on Windows and Installing Thunderbird on Linux.Before you install Thunderbird, check that your computer meets the System Requirements.

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To build Thunderbird, you need to add a file named mozconfig to the root directory of the mozilla-central checkout that contains the following line: acaddoptions -enable-application=comm/mail You can create a file with this line by doing this in the source/ directory. Apr 10, 2021 Thunderbird is a free, open-source, cross-platform e-mail and news (NNTP) client developed by the Mozilla Foundation. The project strategy is modeled after Mozilla Firefox, a project aimed at creating a Web browser. What's new in Thunderbird Version 78.9.1. Thunderbird is a free email client that can be downloaded from Mozilla. There are versions for Microsoft Windows, Apple macOS, and Linux. Before you begin, turn on the 'Allow Less Secure Apps' setting on your Swarthmore Gmail. Instructions to change that setting are here: Allowing Less Secure Apps in Gmail. Thunderbird crashing as soon as it opens; Installing Thunderbird on Mac Air M1; Copied Thunderbird folder from mac to windows but it isn't working; Thunderbird support has ended for Mac OS X 10.6, 10.7 and 10.8; Installing Thunderbird on Linux; Cannot send messages. Mozilla Thunderbird. Launch Thunderbird. If this is the first time you launched Thunderbird, it asks you whether you would like a new email address. Click Skip this and use my existing email and proceed to step 4. Go to the Tools menu and select Account Settings. Click the Account Actions dropdown menu at the bottom left and select Add Mail.

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Open the Thunderbird free download page, which detects the platform and language of your computer and recommends the best edition of Thunderbird for you. Click the download link or button. (If you want to download Thunderbird in a language other than the one suggested, click on 'Other Systems & Languages' for the list of available editions. Click on the OS X installation of your choice to continue.)

Once the download is completed, the disk image may open by itself and mount a new volume which contains the Thunderbird application. If you do not see the new volume, double-click the Thunderbird dmg icon to open it. A Finder window appears, containing the Thunderbird application. Drag the Thunderbird icon to the Applications folder. Now eject the disk image by selecting it in a Finder window and pressing the command+E keys or by using the Finder's File menu, and selecting Eject.

Thunderbird is now ready for use. Open the Applications folder and start by double-clicking on the Thunderbird icon. You may get a security warning that Thunderbird has been downloaded from the Internet. Because you downloaded Thunderbird from the official site, you can click to continue.

Tip: You can add Thunderbird to your dock for easy access. Just open your Applications folder and drag Thunderbird to the dock.

The first time you start Thunderbird you will be alerted that it is not your default email application. (The default email application is the program that opens, for example, when you click a link on a web page to an email address.) If you want Thunderbird to be the default email application, click to set it as your default mailer. If not (for example if you are just trying out Thunderbird) click .

Common Problems

  • If you fail to install Thunderbird to the Mac applications, every time Thunderbird starts it will not have remembered your provious session settings - it will ask you to create email accounts, or otherwise indicate that it has no data. You must drag the Thunderbird dmg file/icon to the Mac Applications folder.
Mozilla Thunderbird Macos
  • The Installing Thunderbird on Mac OS X chapter in the Thunderbird FLOSS manual
  • The Uninstalling chapter in the Thunderbird FLOSS manual
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Swarthmore ITS strongly recommends using Google's web-based interface for your email instead of an email client, in order to take advantage of features specific to Google Mail.

Thunderbird is a free email client that can be downloaded from Mozilla. There are versions for Microsoft Windows, Apple macOS, and Linux.


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Before you begin, turn on the 'Allow Less Secure Apps' setting on your Swarthmore Gmail. Instructions to change that setting are here: Allowing Less Secure Apps in Gmail

Mozilla Thunderbird Mac Os X


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Step By Step Instructions

To set up Thunderbird if it is NOT already configured on your computer

When opening Thunderbird for the first time you will be presented with an Account Setup Wizard.

  1. You will first be prompted to 'Set Up Your Existing Email Address'.
  2. Continue with the directions below.

To update your saved Swarthmore password if Thunderbird was previously configured

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  1. Pull down the Tools menu to and choose Account Settings
  2. If you have a Swarthmore account already configured, select your current Swarthmore IMAP account (username@swarthmore.edu) and choose 'Remove Account' at the bottom of the page under Account Actions.
  3. Next, choose 'Add Mail Account' at the bottom of the page under Account Actions.
  4. On the next screen you will be asked to provide your name and email address. This name will be presented when people receive email from you, so you should use your proper name.
  5. For your email address, enter your Swarthmore username, followed by @swarthmore.edu
  6. After clicking Continue, Thunderbird will auto-detect the server settings. Click Done.
  7. You will be directed to login.swarthmore.edu. Enter your Swarthmore username and password. Click Login.
  8. (NOTE: If you are not redirected, you are using an older version of Thunderbird. Upgrade your Thunderbird to the latest version and start these configuration steps again.)
  9. You will then be redirected to the Duo Authentication page. Authenticate with your preferred device/method.
  10. On the next screen you will be asked to choose an account to link Thunderbird to. Your Swarthmore account should be the only one listed - click on it to continue.
  11. The next screen will ask you to allow Thunderbird to read, send, delete, and manage your mail. Choose Allow.
  12. You will need to check your Outgoing Server Settings to make sure you can send mail from Thunderbird. Thunderbird should autodetect the correct settings for you, but just in case it did not do so correctly, they should look like the settings below.
    1. Pull down the Tools menu and choose Account Settings and select Outgoing Server
  13. If the Authentication Method is NOT set to OAuth2, you will need to change it. Click Edit. Choose OAuth2 from the Authentication Method drop down - everything else should stay the same. Click OK.
  14. That’s it. You are done!

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