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Thunderbird "Supernova" 115.1.0

Thunderbird 115

Thunderbird is a free, open-source, cross-platform application for managing email and news feeds. It is a local (rather than a web-based) email application that is powerful yet easy-to-use.

Thunderbird is clean and elegant by default, but easily customizable to match your workflow and visual preferences. It is loaded with unique and powerful features.

Thunderbird is developed, tested, translated and supported by the folks at Mozilla Corporation and by a group of dedicated volunteers. Thunderbird gives you control and ownership over your email. There are lots of add-ons available for Thunderbird that enable you to extend and customize your email experience.

Thunderbird gives you IMAP/POP support, a built-in RSS reader, support for HTML mail, powerful quick search, saved search folders, advanced message filtering, message grouping, labels, return receipts, smart address book LDAP address completion, import tools, and the ability to manage multiple e-mail and newsgroup accounts.

Thunderbird 115.1.0 changes:

  • Quick Filter bar is now hidden by default
  • Mail tab toolbar and Unified toolbar heights adjusted to be more consistent


  • Message-ID header used account domain instead of "From" field domain
  • Zooming did not work in multi-message view
  • "Clear Recent History" dialog did not resize correctly to fit content
  • Tooltip containing full message title did not appear when hovering over message in card view
  • Message List column headers became transparent in increased contrast mode
  • Message List card padding was incorrect in compact view
  • Total message counts and folder sizes were also hidden when "Hide Local Folders" was selected in Folder Pane options
  • Messages in deeply nested IMAP folders were inaccessible
  • Thunderbird Flatpak could not be executed from terminal using command "thunderbird"
  • CardDAV address book dialog did not resize properly to show all available address books
  • Various visual and style fixes

Download: Thunderbird 115.1.0 for Windows (EN/US) | 32-bit | ~50.0 MB (Open Source)
Download: Thunderbird 115.1.0 for Linux (EN/US) | 74.7 MB
Download: Thunderbird 115.1.0 for Mac OS (EN/US) | 127.0 MB
Download: Thunderbird 115.1.0 in other languages
View: Thunderbird Website | Screenshot

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