Update Thunderbird Version 91 and updates

silversurfer

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Thunderbird version 91.0 is only offered as direct download from thunderbird.net and not as an upgrade from Thunderbird version 78 or earlier. A future release will provide updates from earlier versions.

System Requirements: Details
  • Windows: Windows 7 or later
  • macOS: macOS 10.12 or later (macOS 11.0 for Silicon)
  • Linux: GTK+ 3.14 or higher

NEW​

Native support for macOS devices built with Apple Silicon CPUs

NEW​

Thunderbird now operates in multi-process (e10s) mode by default

NEW​

Latvian language support

NEW​

New user interface for adding attachments

NEW​

Enable redirect of messages

NEW​

Ability to change order of accounts in UI

NEW​

Allow showing empty CC/BCC rows in compose window

NEW​

Warning popup when sending a reply to a likely non-existant email address such as "noreply@example.com"

NEW​

Warning popup when public recipients of a message exceeds threshold

NEW​

Add support for "X-Unsent: 1" header, to open a saved email in a compose window for editing

NEW​

Add support for non-ASCII characters in recipient addresses

NEW​

Context menu to expand mail list pills in the compose window to the list of recipients

NEW​

Quick Find is now available in the multi-message (thread summary) view

NEW​

Keyboard shortcuts to access To/CC/BCC fields of compose window

NEW​

Allow pinning folder views to the Folder Pane

NEW​

Language packs and dictionaries added to about:support

NEW​

PDF.js viewer now included in Thunderbird

NEW​

OpenPGP: "Copy Key Id" option added to Key Manager context menu

NEW​

OpenPGP: Added config option to disable encrypting saved drafts

NEW​

Encrypt mail to BCC recipients (with warning that it will expose the recipients in the list of keys)

NEW​

CardDAV address book support

NEW​

CardDAV address books automatically detected based on provided user information

NEW​

Access to Outlook Contacts; To enable, set ldap_2.servers.outlook.dirType to 3; This setting may cause startup delays.

NEW​

Suggest replacements for discontinued/incompatible add-ons

NEW​

Chat: Beta-level support for Matrix servers (set chat.prpls.prpl-matrix.disable to false)

NEW​

Calendar: Remote calendar auto-detection now supported

NEW​

Calendar: Calendar and category colors now displayed in selection dropdowns

NEW​

Calendar: "Edit" item added to event context menu

NEW​

Calendar: Support opening of .ics files by double-click

NEW​

Calendar: Thunderbird now informs the operating system that it knows how to open webcal: URLs

NEW​

Calendar: Filter and sort items to be imported in the Import dialog

NEW​

Prompt to choose the identity of an accepted calendar invite when no identity matches the event attendees list

NEW​

Support mid: URL scheme for Related Links in calendar event dialogs

NEW​

Permissions to access calendar and address book are now requested when a GMail account is set up, so that calendar and address book can be accessed without having to re-authorize (see notes)

NEW​

Calendar: Per-calendar and global notification settings (in addition to alerts set in events)

NEW​

Tasks: Undo/Redo support for event and task creation and deletion
 

silversurfer

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Thunderbird 91 is available as a manual upgrade​

Thunderbird 91 is a new major version, which introduces new features and changes. The email client is the first to support Apple Silicon CPUs natively, which benefits Mac OS users.

The program makes use of multiple processes by default now, similarly to how Firefox introduced support for the feature a long time ago.

The email account setup process has been improved in the new version of Thunderbird. The email client supports CardDAV address books now, and will detect these automatically based on the email address the user provides. Similarly, remote calendars will be detected automatically to streamline the setup process.

If you set up a Gmail account, Thunderbird will detect the address book and calendar, if available, to suggest to import the data right away. [...]
 

silversurfer

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Thunderbird Version 91.0.2, first offered to channel users on August 23, 2021

NEW​

  • 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

CHANGED​

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

FIXED​

  • 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


 
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silversurfer

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Thunderbird Version 91.0.3, first offered to channel users on August 26, 2021

FIXED​

  • 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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Gandalf_The_Grey

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The developers of the Thunderbird email client have already released another bug fix update on August 26, 2021 (version 91 is still dewy, on August 17, 2021 there was a maintenance and security update to version 91.0.1 and on 8/23/2021 version 91.0.2). Apparently there is no real testing going on anymore.
 

silversurfer

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Thunderbird Version 91.1.0 (first offered to channel users on September 7, 2021)

Changed​

  • VCard attachments now sent with "text/vcard" instead of "text/x-vcard"

Fixed​

  • Thunderbird registered Accessibility Handlers using same GUIDs as Firefox, causing performance issues for NVDA users
  • Focus lost when reordering accounts by keyboard in the Account Manager
  • Account setup did not use provider display name for setting up calendars
  • Various theme and UX fixes
  • Various security fixes
 

silversurfer

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Thunderbird Version 91.1.1 (first offered to channel users on September 16, 2021)
New:
  • Menu item for disabling subject encryption for a single message added
Changed:
  • Printing messages that are not currently displayed is no longer supported, including printing multiple messages at once
Fixed:
  • Buttons on compose window dialogs did not have a visual indication of focus
  • Dropdown fields in message compose window were unreadable on Windows 7 with a dark theme
  • Multiple bulk mail notification warnings were displayed
  • Enabled/Disabled state of message filters did not persist as expected
  • Printing a message did not print a list of its attachments
  • Images attached from a web page were not sent as expected
  • OpenPGP public key was attached multiple times when forwading a message
  • Windows tray icon disappeared if Thunderbird was started by a shortcut with "Run" set to "Minimized"
  • Windows tray message count badge displayed the "unread" count instead of the "new" message count
  • Some downstream Thunderbird builds were incorrectly checking addons for a signature, causing all addons to be disabled
  • Addressbooks set up with autoconfig showed no search results
  • Various CardDAV setup and auto-detection fixes
  • Dates (such as birthday) stored in contacts may display the wrong date; a one-time manual fix may be needed for dates that are incorrect.
  • Attached VCards displayed as plain text when an email was HTML formatted
  • Mailing list names with non-ASCII characters incorrectly displayed with an error
  • LDAP directories were not searched for matches when adding recipients to an email
  • Clicking "Connect to an LDAP address book" in account setup opened CardDAV setup dialog
  • LDAP address books using Kerberos/GSS-API authentication did not authenticate
  • LDAP search queries containing non-ASCII characters produced no results
  • IRC server connections did not automatically retry after a timeout
  • Calendar event editor did not honor mail.spellcheck.inline
 

silversurfer

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Thunderbird Version 91.1.2 (first offered to channel users on September 28, 2021)

CHANGED:​

  • Thunderbird will now warn if an S/MIME encrypted message includes BCC recipients

FIXED:​

  • Message Security popup did not display all recipients due a missing scrollbar
  • Delivery Status Notifications were only shown for the first recipient
  • Composing a message from a template with attachments failed due to a temporary file being removed
  • Attachment sizes were no longer included on printed emails
  • A message sent with multiple attachments sometimes only sent one
  • Thunderbird sometimes attached the wrong messages when forwarding multiple messages by attachment
  • Thunderbird did not re-prompt for an SMTP username if one was not provided
  • Messages with BCC recipients that were held in the Outbox did not retain the BCC header when moved to the Sent folder
  • Thunderbird displayed reminders for events that were cancelled or declined
  • New Feed Account dialog did not honor dark mode
 

silversurfer

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Thunderbird Version 91.2.0 (first offered to channel users on October 7, 2021)

Changed​

  • Saving a single message as .eml now uses a unique filename

Fixed​

  • New mail notifications did not properly take subfolders into account
  • Decrypting binary attachments when using an external GnuPG configuration failed
  • Account name fields in the account manager were not big enough for long names
  • LDAP searches using an extensibleMatch filter returned no results
  • Read-only CalDAV calendars and CardDAV address books were not detected
  • Multipart messages containing a calendar invite did not display any of the human-readable alternatives
  • Some calendar days were displayed incorrectly or duplicated (eg. two "29th" days of a particular month)
  • Phantom event was shown at the end of each day in Calendar week view
  • Various security fixes
 

silversurfer

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Any Thunderbird 78.x installation will be upgraded to the latest version of Thunderbird 91, provided that automatic updates is enabled.
Thunderbird 78.15.0 is the last release for version 78 of Thunderbird. New updates, security or otherwise, won't be released anymore for the client.
 
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