Release Notes

Thunderbird Desktop

Version 115.4.1 | Released October 25, 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 New

new

"Manage Newsgroups Subscription" now displayed on Account Central when using newsgroups

What’s Fixed

fixed

Manually configured authentication methods on accounts did not always persist

fixed

"Send Autocrypt key in header" preference was available on accounts with no encryption key

fixed

SHA-1 certificates were not accepted in Thunderbird 115; acceptance of SHA-1 messages can now be enabled via optional preference

fixed

Various Flatpak enhancements

fixed

Opening folder in new tab by clicking scroll wheel/middle mouse button did not work in Folder Pane

fixed

Message list did not automatically scroll to new messages when switching folders

fixed

"Move/Copy to again" was sometimes displayed in the folder context menu when it should not have been

fixed

Multiple message drafts or message templates could not be opened simultaneously for editing

fixed

Tools > Filters dialog did not open in Unified Folder view if no messages were selected

fixed

Printing dialog could be opened, even with no messages selected

fixed

"From" address was editable when creating a new message from a template if the account identity contained Unicode characters

fixed

Opening a saved .eml file in compose window did not preserve message subject from file

fixed

Replying to some plaintext messages with desired quote selected in original message did not preserve formatting of quote

fixed

"Edit as New", "Reply", and "Redirect" could not be used on multiple messages simultaneously

fixed

"Reply to List" option was always enabled, even with no list to reply to

fixed

"Archive" button in message pane was enabled on messages that could not be archived

fixed

"Followup-To" label was incorrectly labeled as "Newsgroups"

fixed

"Save image as" option did not work for RSS feed items displayed as a webpage

fixed

OTR verification dialog was blank, preventing verification of OTR chat sessions

fixed

Calendar event import failed for some ICS files

fixed

Permission description strings were missing from Add-Ons Manager

fixed

Various visual fixes

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