Download Mozilla Thunderbird 78.2.0

The Mozilla Foundation has released version 78.2 of Thunderbird. Thunderbird is an open source client for e-mail and newsgroups, with features such as support for various mail and news accounts, a spam filter, spell checker and a customizable appearance. In version 78 we find, among other things, a dark mode and other parts of the interface, such as the icons and the screen for composing an email, have been taken care of. Furthermore, the Lightning calendar add-on is now a standard part of the program, there is a new wizard for the first use and only MailExtensions add-ons are supported. An automatic update from 68.x to 78.x is still not possible, but will be possible in a future version. The following changes and improvements have been made in this release:

changes

• OpenPGP Key generation now disabled when there is no default mail account configured
• OpenPGP: Encrypt saved drafts when OpenPGP is enabled
• Twitter search removed
• Calendar: Event summary dialog is now themeable
• MailExtensions: Some APIs now use defineLazyPreferenceGetter in order to benefit from caching

Fixes

• OpenPGP Key Manager search function did not work
• OpenPGP Key Properties dialog was sometimes too small
• OpenPGP: Encrypted email would not send if address contained uppercase characters
• OpenPGP: “Key ID” column could not be resized in Key Manage
• OpenPGP: Keys containing invalid UTF-8 strings could not be imported
• OpenPGP: Enable automatic signing for encrypted messages in additional scenarios
• Many more OpenPGP bug fixes and improvements
• IMAP fetch chunk size was always 65536 bytes
• Attachment corruption could occur when downloading large attachments from an IMAP server that supports chunking
• IMAP server capabilities were not rechecked after upgrading to SSL/TLS connection
• Message Composer: Order of attachments could not be modified using drag & drop
• Composing messages with a “fixed width” font did not work
• Drag and drop of address book contacts did not work in some situations
• Address book migration failed when there was a dot in the file name
• Address book: “Always prefer display name over message header” was always checked when editing a contact
• Address book performance optimizations
• Dialog to add a new mail account from “Account Settings” did not open
• “Select All” (Ctrl+A) in message source did not work until focused with a mouse click
• Ctrl+scroll wheel not zooming in message reader
• Setting/changing a signature from a file lost when closing account settings
• Adaptive Junk Mail settings could not be disabled
• Message filter dialog fixes: Missing scrollbar, drop-down list not wide enough
• Various UX and theme improvements