Thunderbird Desktop
Version 78.7.0 | Released January 26, 2021
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 more on all of the new features in Thunderbird 78, see New in Thunderbird 78.0.
System Requirements: Details
- Windows: Windows 7 or later
- Mac: macOS 10.9 or later
- Linux: GTK+ 3.14 or higher
What’s New
new
Extension API: Compose API now supports editing messages and templates as new messages
new
Extension API: composeHtml is now exposed in MailIdentity
new
Extension API: windows.update and windows.create now support titlePreface
new
Extension API: new Accounts API functions: accounts.getDefault() and accounts.getDefaultIdentity(accountId)
What’s Changed
changed
Extension API: body and plainTextBody are now used as compose mode selectors in setComposeDetails and begin* functions in Compose API
changed
Theme: removed the double border around the task description field on the Tasks tab
What’s Fixed
fixed
Account Manager: When deleting the last remaining account, the default account was not getting cleared and still pointed to the no-longer-existing account
fixed
OpenPGP: Verification of an inline signed message would fail if it contained leading whitespace
fixed
OpenPGP: Various other minor bug and stability fixes
fixed
Mail Window: Quickfilter bar buttons disappear when hovered on Windows 10 High Contrast Black theme
fixed
Theme: folder properties dialog contained black text on a black background in dark mode
fixed
Theme: recipient pills in compose window were not visible in high contrast dark theme on Windows 10
fixed
Extension API: browserAction buttons were not restored after restart if they were moved outside the default toolbar
fixed
Extension API: browser.compose.beginNew could not override identity plaintext setting
fixed
Extension API: browser.compose.beginForward was ignoring ComposeDetails
fixed
Extension API: browser.compose.setComposeDetails did not properly handle Windows-style line endings
fixed
Various security fixes
Known Issues
unresolved
Thunderbird performs sluggishly on macOS Big Sur
