Thunderbird 91.0.3

Thunderbird is a free, open-source, cross-platform application for managing email and news feeds. It is a local (rather than a web-based) email application that is powerful yet easy-to-use. Thunderbird is developed, tested, translated and supported by the folks at Mozilla Corporation and by a group of dedicated volunteers. Thunderbird gives you control and ownership over your email. There are lots of add-ons available for Thunderbird that enable you to extend and customize your email experience.

Thunderbird gives you IMAP/POP support, a built-in RSS reader, support for HTML mail, powerful quick search, saved search folders, advanced message filtering, message grouping, labels, return receipts, smart address book LDAP address completion, import tools, and the ability to manage multiple e-mail and newsgroup accounts.

What"s new in Thunderbird 91.0.2:

Tags are now colored in mail filter editor
Preference for disabling the unread message count badge on Windows taskbar icon added: mail.biff.show_badge

Changes

Context menu items related to OpenPGP and attachments are now hidden when not applicable

Fixes

Creating a new account with manual setup failed
Recipient autocomplete always preferred the primary email address for a contact
LDAP performance improvements
Extensions listed on the Recommended Addons did not have a clear way to view details in a browser
Status checkmark on View > Calendar > Calendar Pane > Show Calendar Pane was reversed
mid: URLs in calendar invites did not open the linked mail message
Various theme and UX fixes

Thunderbird 91.0.3 fixes:

Folder icons could be overridden by linked favicons in HTML messages
Unified folders showed no messages when underlying folders were removed
Folder pane toolbar did not always persist after restarting Thunderbird
Compose window attachment pane did not close when disabling signing of an OpenPGP message
Using "Reply to List" with some list emails incorrectly opened a "no-reply" warning
Unread message count badge on Windows tray icon did not update after moving messages to the Junk folder
Account setup UX issues with Exchange autodiscover
Account settings did not display non-UTF-8 server descriptions correctly
Thunderbird sometimes sent an unnecessary "SMTPUTF8", causing some servers to reject mail
No mouseover pop was displayed with event details for non-all-day events in the Today Pane
Filtering tasks in the Today Pane did not work
Email based event scheduling displayed the date and time in a format unreadable by humans

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