Thunderbird Supernova

Thunderbird Supernova

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Cezar Renta
Reviewed by Cezar Renta
Updated on Sep 17, 2023

Thunderbird Supernova is the latest release of the popular email client Mozilla Thunderbird. This new version boasts several improvements and features that make it faster, more accessible, and more beautiful than ever. We believe that Thunderbird Supernova will revolutionize how you manage your email, calendar, and contacts.

One of the most significant changes in Thunderbird Supernova is the improved keyboard navigation and screen reader accessibility. This feature makes it easier for users with disabilities to navigate the application, making it more inclusive and accessible for everyone. Additionally, the update introduces an improved "mini-month" layout, improvements to the day/week/month grid, a pleasing color palette, and several more minor changes. These changes make Thunderbird Supernova more visually appealing and user-friendly.

We understand that managing multiple email accounts, calendars, and contacts can be overwhelming, which is why Thunderbird is designed to maximize your freedom and efficiency. With the latest release, you can access all your messages, calendars, and contacts in one fast app, filter and organize the way you like, and waste less time finding browser tabs. We believe that Thunderbird Supernova will help you manage your digital life with ease and simplicity.

What is Thunderbird

As an email client software developed by Mozilla, Thunderbird was designed to manage multiple email accounts, news feeds, and chat accounts. It provides a user-friendly interface that makes navigating and managing various aspects of email communication easy.

One of the key features of Thunderbird is its AI-powered email search functionality, which allows users to quickly and easily find specific emails based on keywords, sender, recipient, or other criteria. This can be especially useful for users who receive a high volume of emails and need to quickly locate important messages.

Thunderbird also includes a robust email composition and management tool that allows users to send and receive emails easily. The software supports many email protocols, including POP, IMAP, and SMTP, and can be configured to work with most email providers.

In addition to email management, Thunderbird also includes a built-in address book that allows users to store and manage contact information for their email contacts. This makes it easy to send emails to specific individuals or groups of people quickly.

Thunderbird also provides a range of customization options, including the ability to customize the user interface, configure email settings, and manage local folders. This makes it easy for users to tailor the software to their specific needs and preferences.

Overall, Thunderbird is a powerful and versatile email client that provides a range of features and functionality to help users manage their email communication. Whether you're a casual email user or a power user who needs to manage multiple email accounts and messages, Thunderbird is a reliable and effective email client that can help streamline your email communication.

Thunderbird Supernova

Thunderbird Supernova is the major update to Thunderbird 115. This version is a modernized software overhaul, visually and technically. With Supernova, Thunderbird has been modernized to provide an updated user interface that is more customizable and with code that is easier to maintain and improve.

Supernova introduces beautiful icons with a more consistent visual style unique to Thunderbird. The design remains sharp and pixel-perfect at any density setting. There was also introduced a pleasing color palette that makes the software more visually appealing.

Working with multiple monitors and display resolutions is now easier with Thunderbird Supernova. The software provides an easy density control feature that allows you to adjust the size of the user interface elements to match your display resolution. This feature is especially useful for users with high-resolution displays.

As part of our ongoing effort to modernize and upgrade Thunderbird's calendar, Supernova introduces an improved "mini-month" layout, improvements to the day/week/month grid, and several minor changes. These changes make the calendar more user-friendly and provide a better overall experience.

Thunderbird Supernova is the brainchild of Alex Castellani, who has been working tirelessly to make Thunderbird more modern and user-friendly. With this major update, Thunderbird has taken a huge leap forward regarding usability and functionality.

In conclusion, Thunderbird Supernova is a major update to Thunderbird 115 that modernizes and improves the software both visually and technically. With Supernova, Thunderbird has become more user-friendly, customizable, and easier to maintain and improve.

Features and Improvements

Thunderbird Supernova introduces a number of features and improvements that enhance the mail and message experience, calendar and events, customization and settings, accessibility and navigation.

Mail and Message Features

Thunderbird Supernova provides a number of new features and improvements to make mail and message management more efficient and intuitive. The new dynamic toolbar adapts to the user's workflow and provides contextual options, making finding the most commonly used functions easy. The new quick filter feature allows users to find messages based on specific criteria quickly. The message list display options have been expanded, allowing users to customize the message list header and subject. The vertical view provides a cleaner, more relaxed message pane layout. Thunderbird Supernova also includes a new spaces toolbar that allows users to group messages by tags.

Calendar and Events

Thunderbird Supernova introduces significant improvements to the calendar and events functionality. The new mini-month layout and improved day/week/month grid provide an intuitive and customizable view of events. The unified toolbar for the calendar space on top of the tabs makes it easy to switch between different calendars and events. The improved calendar design includes a pleasing color palette and font sizes that are easy to read. Thunderbird Supernova also includes a new feature that allows users to customize weekends.

Customization and Settings

Thunderbird Supernova offers a range of customization options to meet the needs of both new and veteran users. The folder modes have been improved and are now user-customizable. The menu bar and shortcuts have been streamlined, making finding the most commonly used functions easy. The workflows have been optimized, allowing users to work more efficiently. Thunderbird Supernova also includes a new feature that allows users to customize the folder pane header.

Accessibility and Navigation

Thunderbird Supernova improves accessibility and navigation for users with different needs. The screen reader accessibility has been greatly expanded, making it easier for users to navigate mail content and buttons using the TAB and arrow keys. The keyboard navigation has been improved throughout the application, making navigating and managing messages easier. Thunderbird Supernova also includes a new density settings feature that allows users to adjust the density of the user interface to suit their preferences.

Thunderbird Supernova is a confident and knowledgeable release that provides a range of new features and improvements that enhance the mail and message experience, calendar and events, customization and settings, accessibility and navigation.

Operating System Compatibility

We understand the importance of a software that can work seamlessly across different operating systems. That is why Thunderbird Supernova is compatible with a wide range of operating systems.

Whether using Linux, Windows, or macOS, Thunderbird Supernova is designed to work flawlessly on all these platforms. It is compatible with Windows 7 or later and macOS 10.12 or later. We recommend having at least 1GHz or faster Intel/AMD compatible processor, 1GB RAM, and 250 MB hard drive space for Windows. We recommend having a Mac computer with an Intel x86 or Apple Silicon processor, 1GB RAM, and 500 MB hard drive space for macOS.

We understand that some of our users may still be using older versions of our software, such as Thunderbird 102. While we recommend upgrading to the latest version for the best experience, Thunderbird Supernova is backward compatible with Thunderbird 102. This means you can upgrade to Thunderbird Supernova without any concerns about compatibility issues.

Thunderbird Supernova is also compatible with other Mozilla products, such as Firefox. This means that you can use Thunderbird Supernova alongside Firefox without any issues.

Thunderbird Supernova is designed to work seamlessly across different operating systems, including Linux, Windows, and macOS. It is backward compatible with Thunderbird 102 and other Mozilla products like Firefox. We recommend having the minimum hardware requirements for the best experience.

Download and Installation

To download Thunderbird Supernova, we can download it fast and easily from our site. 

After downloading the installer, we can begin the installation process. The installation process is simple. We just need to double-click on the downloaded installer and follow the instructions that appear on the screen. You can choose the language, installation directory, and other options during installation.

Once the installation is complete, you can launch Thunderbird Supernova from the desktop shortcut or the Start menu. The first time we launch Thunderbird Supernova, we will be prompted to set up our email account. We can either add an existing email account or create a new one.

User Experience

Thunderbird takes user experience and expands it further. With the Supernova release, both new and veteran users can easily navigate and use the email client. 

For New Users

If you're new to Thunderbird, you'll find that the new interface is intuitive and easy to use. Several changes were made to the software's layout to make it more visually appealing and user-friendly. One of the most significant changes is the introduction of card view, which allows you to see all your email messages in a more organized and efficient way. You can easily switch between card view and table view, depending on your preference.

It's now easier for new users to set up their email accounts. The account setup wizard guides you through the process step-by-step, and you can easily import your contacts and messages from other email clients. Firefox Sync is also integrated into Thunderbird, allowing you to sync your bookmarks, passwords, and preferences across devices.

For Veteran Users

If you're a veteran Thunderbird user, don't worry - the software hasn't made any drastic changes that will disrupt your workflow. You'll still find all the features and functionality you're used to but with a more modern and streamlined interface. Several improvements to the folder pane make it easier to navigate and organize your email messages.

One of the most significant changes for veteran users is the introduction of a vertical view layout with card view for the message list pane. This layout is similar to the classic view layout with table view but with a more modern and visually appealing design. You can easily switch between the two layouts, depending on your preference.

Thunderbird Alternatives

While Thunderbird is a popular email client, alternatives are available for users who prefer a different experience. Here are a few Thunderbird alternatives worth considering:


DreamMail is a Windows-based email client that offers a range of features, including support for multiple email accounts, spam filtering, and customizable templates for composing emails. It also includes a built-in calendar and task manager to help users stay organized. DreamMail is available in both English and Chinese.


MailBird is another Windows-based email client that offers a modern, streamlined interface. It includes features like email tracking, attachment preview, and snoozing emails for later. MailBird also integrates with popular apps like Dropbox, Google Drive, and Slack. While MailBird offers a free version, users must upgrade to the Pro version to access some of its more advanced features.

Other Thunderbird alternatives include Postbox, eM Client, and Claws Mail. Ultimately, the best email client for you will depend on your specific needs and preferences. We recommend trying a few different options to find the one that works best for you.

Thunderbird Supernova Download Details

  • Updated:
    Sep 17, 2023
  • User Rating:
    4.4 / 5 (15 votes)
  • Editors' Review:
    Not yet reviewed
  • Downloads:
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