Support mid: URL scheme for Related Links in calendar event dialogs Prompt to choose the identity of an accepted calendar invite when no identity matches the event attendees list ics files by double-clickĬalendar: Thunderbird now informs the operating system that it knows how to open webcal: URLsĬalendar: Filter and sort items to be imported in the Import dialog Suggest replacements for discontinued/incompatible add-onsĬhat: Beta-level support for Matrix servers (set to false)Ĭalendar: Remote calendar auto-detection now supportedĬalendar: Calendar and category colors now displayed in selection dropdownsĬalendar: 'Edit' item added to event context menuĬalendar: Support opening of. OpenPGP: Added config option to disable encrypting saved draftsĮncrypt mail to BCC recipients (with warning that it will expose the recipients in the list of keys)ĬardDAV address books automatically detected based on provided user informationĪccess to Outlook Contacts To enable, set ldap_2. to 3 This setting may cause startup delays. OpenPGP: 'Copy Key Id' option added to Key Manager context menu PDF.js viewer now included in Thunderbird

Language packs and dictionaries added to about:support Keyboard shortcuts to access To/CC/BCC fields of compose windowĪllow pinning folder views to the Folder Pane Quick Find is now available in the multi-message (thread summary) view Warning popup when public recipients of a message exceeds thresholdĪdd support for 'X-Unsent: 1' header, to open a saved email in a compose window for editingĪdd support for non-ASCII characters in recipient addressesĬontext menu to expand mail list pills in the compose window to the list of recipients Warning popup when sending a reply to a likely non-existant email address such as ' '

New user interface for adding attachmentsĪbility to change order of accounts in UIĪllow showing empty CC/BCC rows in compose window Thunderbird now operates in multi-process (e10s) mode by default Native support for macOS devices built with Apple Silicon CPUs

macOS: macOS 10.12 or later (macOS 11.0 for Silicon).

and not as an upgrade fromĪ future release will provide updates from earlier versions.

Thunderbird version 91.0 is only offered as direct download from As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla Check out the notes below for this version of Thunderbird.

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