WEBMay 29, 2024 · Thunderbird Desktop. Version 115.11.1 | Released May 29, 2024. Check out the notes below for this version of Thunderbird. As always, you’re encouraged to tell us what you think, 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 …