Download Mozilla Thunderbird (en-US)

Pin this version: winget install --id Mozilla.Thunderbird --version 159.0 --exact

What’s New new Linux tray icons indicate unread mail and show its count in the tooltip new Graph calendars are auto-detected on new account creation What’s Fixed fixed Non-ASCII IMAP tags could exceed server length limits and be rejected fixed Zoom Text Only option did not work in the View menu fixed Multiple messages were printed even after canceling the print dialog fixed Save All and Detach All failed for attachments with invalid filename paths fixed First Wrap Long Lines toggle did nothing in View Source fixed POP3 NTLM authentication failed because the password was sent incorrectly fixed Search Messages menu option was enabled but did not work for saved search folders fixed Quick Find shortcut (/) only worked after Ctrl+F was used once fixed Unicode email addresses could hide different Reply-To destinations fixed Newsgroups with UTF-8 names could display duplicate or incorrect messages fixed View > Folders did nothing in Calendar and Tasks tabs fixed Global search results did not display recipients in the To field fixed Forwarding malformed MIME messages could omit attachments fixed Retry and Save Locally failed after a sent-folder copy error fixed Closing an unmodified compose window prompted to save when using Body Text fixed MP4 attachments could be truncated when forwarding messages fixed Inline images disappeared when editing local or POP messages as new fixed EWS/Graph accounts could fail when outgoing server settings were incomplete fixed Account Hub Edit…

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/159.0

Pin this version: winget install --id Mozilla.Thunderbird --version 158.0.1 --exact

What’s Fixed fixed Dialogs had transparent backgrounds with third party themes fixed Security fixes

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/158.0.1

Pin this version: winget install --id Mozilla.Thunderbird --version 158.0 --exact

What’s Changed changed Quick filter responsiveness has been improved changed ExtensionSettings policy installs add-ons from update_url when install_url not set What’s Fixed fixed Copy Link Location only copied detached attachment filenames instead of full paths fixed Thunderbird could crash while performing a Body search fixed Troubleshooting falsely reported crash reports were not configured when available fixed Right-clicking inline images zoomed them instead of opening the context menu fixed Switching to Unified Folders could leave All Folders enabled and not change view fixed Archived Inbox folders ignored localized names and appeared as "INBOX" fixed OpenPGP key management had unlocking, handle leak, and protection state issues fixed OpenPGP backup password text could not be copied and context menu was transparent fixed Quick Filter failed to match accented names when searching without accents fixed Holding Ctrl+Enter could unintentionally confirm the send prompt and send duplicates fixed Plain-text inline forwards omitted signatures placed below the quote fixed Remote content exceptions without a scheme only applied to HTTP, not HTTPS fixed Remote content exceptions incorrectly allowed wildcard hostnames like *.example.com fixed Saved CalDAV/CardDAV credentials could be forgotten after restarting Thunderbird fixed CardDAV setup failed without prompting for a password fixed CardDAV address book sync failed to fetch newly added contacts fixed CardDAV updates could…

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/158.0

Pin this version: winget install --id Mozilla.Thunderbird --version 157.0.1 --exact

What’s Fixed fixed EWS/Graph messages could crash Thunderbird when handling relative URL fragments

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/157.0.1

Pin this version: winget install --id Mozilla.Thunderbird --version 157.0 --exact

What’s New new Enterprise policy DisableChat disables Thunderbird Chat functionality new Enterprise policy DisableFileLink disables Thunderbird FileLink functionality What’s Changed changed Preference mailnews.headers.minNumHeaders has been removed changed Allow viewing remote content in OpenPGP messages encrypted with integrity protection changed RNP command-line utilities are no longer included with Thunderbird changed IMAP/POP manual config port field is now optional changed Thundermail built-in add-on updated to v2.0.16 What’s Fixed fixed Ctrl+Shift+K could fail to open the Quick Filter UI fixed Message list could show the wrong sender for messages fixed Status bar could remain active and cause 100% CPU usage after activity ended fixed OpenPGP discovery failed to find replacement keys after a key was revoked fixed Valid RSA OpenPGP keys could be rejected, preventing encryption fixed Sent messages could silently fail to save to the IMAP Sent folder fixed Sending message did not fail gracefully with malformed references header fixed Thunderbird could hang when waiting for IMAP server greeting during account setup fixed Account Hub account creation could fail with malformed URI fixed Custom OAuth Endpoint Host incorrectly required a full URL instead of a domain fixed Message filters could falsely match when evaluating search term failures fixed CardDAV address books could fail to sync when no password prompt was needed fixed Yahoo emails appeared blank with MIME handlers…

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/157.0

Pin this version: winget install --id Mozilla.Thunderbird --version 156.0.1 --exact

What’s Fixed fixed Thunderbird could crash when saving a message

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/156.0.1

Pin this version: winget install --id Mozilla.Thunderbird --version 156.0 --exact

What’s New new OpenPGP key properties can print debug information to the Error Console new External browser login flow enabled for Yandex new Custom OAuth support for issuer ID and client secret field for IMAP and POP3 new Custom OAuth support for POP3 new Enterprise policy DisableUpdateSettings prevents users from changing update settings new Enterprise policy DisableDataCollectionSettings prevents users from changing data collection setting new Enterprise policy DisableMessageForwardingFilters prevents message filters from automatically forwarding messages What’s Changed changed Preference mail.offer_experimental_features renamed to mail.experimental_features_settings.enabled changed Thundermail built-in add-on updated to v2.0.11 What’s Fixed fixed Detached attachment links were truncated when folder path contained & fixed Opening a PDF attachment in a tab displayed empty tab fixed POP3 folders with names over 55 characters could become duplicated after upgrading fixed Folders with invalid filename characters could show hashed names if cache was lost fixed Save All, Detach All, and Delete All failed after deleting one attachment fixed Renaming folders could reset folder settings fixed Subscribing an IMAP folder and subfolder together failed to subscribe the subfolder fixed Some newly fetched POP messages were not marked with new star after startup fixed Sorting after deleting the only child message removed the parent from view fixed OpenPGP signing failed with external…

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/156.0

Pin this version: winget install --id Mozilla.Thunderbird --version 155.0.1 --exact

What’s Fixed fixed Empty filter search values matched every message

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/155.0.1

Pin this version: winget install --id Mozilla.Thunderbird --version 155.0 --exact

What’s New new S/MIME popup shows signature, digest, encryption algorithms and key sizes new Default address book for manually added contacts configurable with mail.addr_book.add_item_default_uri new Enterprise policy DisableQRExport can disable QR export new OAuth add-ons can override built-in settings for selected domains and hostnames new Manual account config streamlined with Exchange, Graph, and custom OAuth support new Custom OAuth support for IMAP and SMTP servers new PKCE and external browser fields added to custom OAuth settings new Enterprise policy DisableExperimentalFeatures for disabling experimental features What’s Fixed fixed Unread count dock badge disappeared on macOS restart when no mail window opened fixed IMAP tags did not sync automatically across clients fixed Embedded SVG images appeared broken when Display Attachments Inline was disabled fixed Holding arrow keys failed to smoothly navigate the folder pane fixed Mark and Tag menu bar items were disabled in search results fixed Quick Filter ignored address book display names shown in message lists and headers fixed Attachment filters could disappear or return no results in global search fixed Body search failed for quoted-printable messages ending on a soft line break fixed Failed encrypted send did not preserve draft fixed Failed account setup left an incoming server that blocked account recreation fixed Removing an account did not remove its OAuth token from the password manager fixed Account Hub…

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/155.0

Pin this version: winget install --id Mozilla.Thunderbird --version 154.0 --exact

What’s New new Preview functionality for attachments on macOS new CMS message with AuthEnvelopedData can be decrypted properly in Thunderbird new Global search results can open in list view by default with new setting new "Copy To" folder context menu added for message/rfc822 attachments new Optional system tray mode that hides Thunderbird when the last window closes new Support for dragging message/rfc822 type MIME attachments to folder tree new Microsoft Graph enabled for Microsoft 365 What’s Fixed fixed Remote content warnings appeared despite sender block exceptions being applied fixed Collapsed saved-search folders did not deselect their subfolders fixed Server-designated special folder flags could be removed until restart fixed Messages could render excessive trailing blank lines fixed Copying a message subject included the "Subject:" label in copied text fixed Moving IMAP folders to Local Folders could delete messages after copy failures fixed 7-bit clean unobtrusive signature payloads were unnecessarily base64 encoded fixed DisablePasswordReveal policy failed to prevent revealing saved passwords fixed Account setup tried local-part usernames before full email addresses fixed Read-only CardDAV address books were incorrectly treated as writable fixed Autoscroll icon was missing directional arrows in scrollable messages fixed Blank 1970-dated messages could appear from incomplete message file copies fixed Opening drafts or templates with invalid quoted-printable data…

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/154.0

Pin this version: winget install --id Mozilla.Thunderbird --version 153.0.3 --exact

What’s Fixed fixed Thunderbird could crash when saving a sent Exchange message

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/153.0.3

Pin this version: winget install --id Mozilla.Thunderbird --version 153.0.2 --exact

What’s Changed changed There are no Thunderbird changes requiring release notes in this release

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/153.0.2

Pin this version: winget install --id Mozilla.Thunderbird --version 153.0.1 --exact

What’s Fixed fixed New Message and New Event buttons were unreadable in right-to-left locales fixed OpenPGP sending failed when an accepted key lacked a valid encryption subkey

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/153.0.1

Pin this version: winget install --id Mozilla.Thunderbird --version 153.0 --exact

What’s New new Unified folders now display account color indicator with account name tooltip new OAuth login for mail accounts now opens in default web browser new Thundermail services can now be used without installing an add-on new OAuth responses now verify issuer fields and reject missing required issuers What’s Changed changed Removed Odnoklassniki chat setup and directed users to XMPP configuration What’s Fixed fixed Ctrl+S did not save PDF attachments opened in Thunderbird tabs fixed TLS errors incorrectly reported all unknown failures as untrusted certificates fixed Thunderbird could crash during shutdown fixed Thunderbird could crash when copying an empty list of messages fixed New mail alerts incorrectly sized or positioned on some multi-monitor setups fixed Old IMAP profile migration deleted INBOX and other mailbox files fixed Space bar did not scroll in PDF attachments opened from emails fixed 'Search Messages' shortcut (Ctrl+Shift+F) failed in standalone message window fixed Folder location widget used non-localised name fixed Empty confirmation dialog when more messages opened in tabs than mailnews.open_tab_warning fixed Removing tags from IMAP messages could fail and tags reappeared after refresh fixed Folder pane could not be horizontally resized in additional 3-pane tabs fixed Global search failed to display inaccessible messages found in local folders fixed Numeric subfolders were sorted alphabetically instead of naturally fixed Virtual folder…

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/153.0

Pin this version: winget install --id Mozilla.Thunderbird --version 152.0.1 --exact

What’s Fixed fixed Reply All button was missing for some EWS messages with multiple recipients fixed Security fixes

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/152.0.1

Pin this version: winget install --id Mozilla.Thunderbird --version 152.0 --exact

What’s New new SecurityDevices enabled in enterprise policies new One-click account setup for Thundermail accounts What’s Changed changed Use 'Add' instead of 'New' for account, calendar, address book creation buttons changed GMail OAuth updated to use PKCE changed Hostname of mail server is also checked when detecting address books and calendars changed Updated about:rights to replace local with hosted url changed 'Hide completed tasks' now also hides cancelled tasks What’s Fixed fixed New mail alerts appeared on wrong monitor in three-monitor setup fixed Spam messages triggered new mail notifications before being moved to Spam folder fixed Filtered IMAP or NNTP subscriptions were lost after closing Subscribe dialog fixed 'Download Headers' dialog for newsgroups failed to open fixed Messages nested deeper than 255 levels disappeared from threading view fixed Performing Delete followed by Undo on thread parent message could corrupt view fixed Single messages still appeared collapsible after thread members were deleted fixed Updated threads remained misordered until folder refresh or resort fixed Non-threaded subject sorting separated 'RE:' replies from original messages fixed BCC recipients were included in signed email headers fixed Performance issue when decrypting encrypted messages fixed Filter search on Body missed draft messages containing German umlauts fixed Thunderbird could crash during local message search fixed Blocked file warning showed without 'Unblock File'…

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/152.0

Pin this version: winget install --id Mozilla.Thunderbird --version 151.0.1 --exact

What’s Fixed fixed Forwarding/Redirecting Exchange messages failed with NS_ERROR_OUT_OF_MEMORY

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/151.0.1

Pin this version: winget install --id Mozilla.Thunderbird --version 151.0 --exact

What’s New new Enable Thundermail OAuth sign-in with account auto-configuration new Enable users to override OAuth provider details for EWS accounts new Tasks can be sorted by created or modified date What’s Changed changed Reinstated default application check when Thunderbird starts changed OpenPGP public key no longer attached by default in signed-only messages What’s Fixed fixed Thunderbird could crash when processing message headers fixed Thunderbird could crash on startup fixed Calendar view tabs were not properly keyboard accessible fixed Thunderbird could crash when processing new incoming messages fixed On macOS, dragging attachments out of Thunderbird created multiple copies fixed Cancelling a newsgroup posting was not possible fixed Some IMAP emails showed current time instead of correct received date fixed Search result count was missing when using 'Find in Message' or Ctrl+F fixed Search results showed older irrelevant emails before newer exact matches fixed Reply with selected text lost formatting for HTML messages containing </pre> fixed Multipart/related attachments were not preserved when editing or forwarding fixed Forwarded malformed MIME email had empty body and extra attachment fixed OWL add-on description was not visible in Account Hub for non-en-US locales fixed Account Hub prompted for password after OAuth login, causing Outlook setup failure fixed Auto-discovered Account Hub values were not preserved for manual editing fixed Account Hub links for…

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/151.0

Pin this version: winget install --id Mozilla.Thunderbird --version 150.0.2 --exact

What’s Fixed fixed Security fixes

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/150.0.2

Pin this version: winget install --id Mozilla.Thunderbird --version 150.0.1 --exact

What’s Fixed fixed Thunderbird could crash when processing message headers fixed Security fixes

Release notes

Manifest: manifests/m/Mozilla/Thunderbird/150.0.1