Release Notes

Thunderbird Desktop

Version 115.8.0 | Released February 20, 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 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

Added option to show packet dump when OpenPGP fails to decrypt

What’s Fixed

fixed

Thunderbird slowed down significantly when opening email files (.eml)

fixed

Inbox view intermittently reverted to default view after moving or deleting messages

fixed

Size of collapsed folders in folder pane did not include size of subfolders

fixed

Hovering over folder does not always expand subfolders

fixed

Switching to thread pane of a folder using keyboard navigation did not focus top message

fixed

Clicking "Sent unsent messages" in Outbox context menu while in offline mode did not prompt user to go online

fixed

Mail tab-specific Unified Toolbar buttons received focus incorrectly

fixed

Quick Filter settings did not persist when Quick Filter bar was turned off

fixed

Quick Filters were unusually slow

fixed

OpenPGP Key Manager filtering did not work

fixed

OpenPGP sometimes attempted to decrypt message with incorrect key

fixed

Autoconfig failed on servers that did not support OAuth2

fixed

Opening different attachments with the same name in different messages could cause attachment files to become conflated

fixed

Overflowed attachment list could not be scrolled

fixed

Passwords disappeared from password manager list after applying and clearing filters

fixed

Cookies in cookie manager list disappeared after applying and then clearing filters

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