Thunderbird Desktop
Version 115.4.2 | Released November 6, 2023
Check out the notes below for this version of Thunderbird. As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla.
For help and a quick start on Thunderbird 115, see Thunderbird 115 Supernova FAQ.
For more on all the new features in Thunderbird 115, see What’s New in Thunderbird 115.
System Requirements: Details
- Windows: Windows 7 or later
 - Mac: macOS 10.12 or later
 - Linux: GTK+ 3.14 or higher
 
What’s Fixed
            
            
              
              fixed
            
            
          
          No messages or calendar items were displayed on startup
            
            
              
              fixed
            
            
          
          Toolbar & Folder View widget fixes
            
            
              
              fixed
            
            
          
          Insert image dialog was not properly sized on some localized builds
            
            
              
              fixed
            
            
          
          The "unencrypted subject" icon was always briefly displayed when replying to a message
            
            
              
              fixed
            
            
          
          RSS feeds with lengthy attachment filenames cut off visible content
            
            
              
              fixed
            
            
          
          RSS feeds with no favicon displayed default icon in the folder color
            
            
              
              fixed
            
            
          
          NNTP messages that were previously downloaded were not displayed if the server went offline
            
            
              
              fixed
            
            
          
          Vcard photos were not imported when using opening the file with Thunderbird
            
            
              
              fixed
            
            
          
          Publishing calendars to invalid URLs did not display a helpful error
            
            
              
              fixed
            
            
          
          Publishing calendar events via authenticated WebDAV failed
            
            
              
              fixed
            
            
          
          Converting a message to an event failed when the message pane was not displayed
            
            
              
              fixed
            
            
          
          Redirect dialog displayed for WebDAV calendars was too small
            
            
              
              fixed
            
            
          
          Visual and Theme improvements