Mozilla Thunderbird 128.5.2

Thunderbird is a desktop mail client. It's a companion product to Mozilla Firefox. Besides standard email, it supports newsgroups, feed reading, and chat protocols (XMPP, IRC and Twitter), all with multiple identities or accounts. Through Mozilla Lighning or other plugins it's extensible into a full personal information manager. Out of the box it supports SMTP, POP3, IMAP, SSL/TLS, S/MIME, LDAP, RSS/Atom, and searching, filtering or grouping, labels, virtual folders, and comes with a spam filter.

Tags c++ e-mail email-client newsgroup feed-reader chat
License MPL
State stable

Homepage Download

Recent Releases

128.5.215 Dec 2024 07:25 minor feature:
128.4.430 Nov 2024 10:25 minor feature:
128.4.329 Nov 2024 18:05 minor feature:
128.4.028 Nov 2024 09:05 minor feature:
128.3.126 Nov 2024 20:45 minor feature:
128.3.026 Nov 2024 03:05 minor feature:
128.2.324 Nov 2024 22:05 minor feature:
128.2.224 Nov 2024 17:45 minor feature:
128.2.124 Nov 2024 12:45 minor feature:
128.2.023 Nov 2024 07:45 minor feature:
128.1.131 Oct 2024 13:05 minor feature:
128.1.015 Oct 2024 15:05 minor feature:
128.0.102 Aug 2024 06:05 minor feature:
128.028 Jul 2024 17:45 minor feature:
115.12.204 Jul 2024 14:45 minor feature:
115.12.119 Jun 2024 10:45 minor feature:
115.11.101 Jun 2024 12:05 minor feature:
115.11.017 May 2024 11:45 minor feature:
115.10.202 May 2024 11:45 minor feature: Changes Changed. Update channel for Thunderbird 115 is now. esr.
115.10.017 Apr 2024 10:25 minor feature: Creating a tag in General Settings with a number as the tag name did not work Quick Filter button selections did not persist after restart. Collapsing and expanding message list headers sometimes caused header to scroll out of view. Single message with no children inside a parent thread sometimes displayed incorrectly as a thread with a duplicate of itself as its child. Get selected messages" menu items did not work. Download and Sync Messages" dialog was too short when using Russian locale, obscuring OK button. After changing password on an IMAP account, the account could become locked due to too many failed login attempts. Retrieving multiline POP3 message from server failed if message chunk ended in newline instead of carriage return and newline. IMAP, POP3, and SMTP Exchange autoconfiguration did not support encryption configuration. Non-empty address book search bar interfered with displaying/editing contacts. Deleting attendees from "Invite Attendees" view removed attendees from view, but not from invite. Splitter arrow between task list and task description did not behave as expected. Performance improvements and code cleanup. Security.
115.9.023 Mar 2024 01:05 minor feature: Opened ignored messages in a message thread/subthread were not marked as read in IMAP folders Multi-language spellcheck sometimes skipped languages. Thread tree did not update when live language switching. Visual improvements to "Reorder Attachments" popup. Sort order was sometimes incorrect in Grouped By views. Selecting "Match all messages" in Filter Rules dialog did not disable all search criteria. S/MIME-only signed messages sometimes incorrectly displayed signature as invalid. OpenPGP keys uploaded to an HKP keyserver were sent with the wrong. Content-Type header. Keyboard navigation within search toolbar did not work. Flatpak builds only had the en-US spell check dictionary available. Security.
115.8.108 Mar 2024 00:47 minor feature: Settings: Updating tags failed if Automatic Updates were disabled Size of collapsed folders in folder pane did not include size of subfolders. Reversing sort order of Grouped By views in quick search did not reverse. Removing threaded messages in a unified folder sometimes resulted in an incorrect number of levels in the thread. Thread collapsing did not behave correctly when copying thread messages in multi-folder view. S/MIME encryption failed to encrypt if unsupported certificate type was encountered. Decrypting a copy of an S/MIME encrypted, opaque-signed message created an unreadable message. Thunderbird sometimes changed the subject of messages selected while simultaneously decrypting a large PGP-encrypted message. Quote message" menu item in compose window did not work when replying to message opened in separate tab. Toolbar customization window contents overflowed the window width. Security.
115.8.021 Feb 2024 08:45 minor feature: What s New New. Added option to show packet dump when OpenPGP fails to decrypt. Thunderbird slowed down significantly when opening email files (.eml). Inbox view intermittently reverted to default view after moving or deleting messages. Size of collapsed folders in folder pane did not include size of subfolders. Hovering over folder does not always expand subfolders. Switching to thread pane of a folder using keyboard navigation did not focus top message. Clicking "Sent unsent messages" in Outbox context menu while in offline mode did not prompt user to go online. Mail tab-specific Unified Toolbar buttons received focus incorrectly. Quick Filter settings did not persist when Quick Filter bar was turned off. Quick Filters were unusually slow. OpenPGP Key Manager filtering did not work. OpenPGP sometimes attempted to decrypt message with incorrect key. Autoconfig failed on servers that did not support OAuth2. Opening different attachments with the same name in different messages could cause attachment files to become conflated. Overflowed attachment list could not be scrolled. Passwords disappeared from password manager list after applying and clearing filters. Cookies in cookie manager list disappeared after applying and then clearing filters. Security.
115.7.025 Jan 2024 15:25 minor feature: What s New New Autocrypt Gossip key distribution added Fixes When starting Thunderbird, unread message count did not appear on collapsed accounts Blank window was sometimes displayed when starting Thunderbird Thunderbird "--chrome" flag incorrectly opened extra messenger.xhtml Add-ons did not start correctly when opening Thunderbird from other programs Drag-and-drop installation of add-ons did not work if Add-ons Manager was opened from Unified Toolbar Double-clicking empty space in message pane incorrectly opened the currently selected message Canceling SMTP send before progress reached 100 did not stop message from sending PDF attachments open in a separate tab did not always restore correctly after restarting Thunderbird Some OpenPGP dialogs were too small for their contents Account Manager did not work with hostnames entered as punycode Downloading complete message from POP3 headers caused message tab/window to close when "Close message window/tab on move or delete" was enabled Some ECC GPG keys could not be exported Contacts deleted from mailing list view still visible in Details view After selecting contacts in Address Book and starting a new search, the search results list did not update Various UX and visual improvements Security fixes https://www.mozilla.org/en-US/security/known-vulnerabilities/thunderbird/#thunderbird115.7
115.6.111 Jan 2024 01:45 minor feature:
115.6.022 Dec 2023 09:45 minor feature:
115.5.107 Dec 2023 10:25 minor feature:
115.5.022 Nov 2023 03:25 minor feature:
115.4.107 Nov 2023 07:25 minor feature:
115.3.323 Oct 2023 03:25 minor feature:
115.3.108 Oct 2023 08:45 minor feature:
115.2.324 Sep 2023 03:17 minor feature:
115.2.009 Sep 2023 08:25 minor feature:
115.1.125 Aug 2023 07:25 minor feature:
115.1.011 Aug 2023 03:17 minor feature:
115.0.127 Jul 2023 14:45 minor feature:
115.013 Jul 2023 00:48 major feature: https://www.thunderbird.net/en-US/thunderbird/115.0/releasenotes/
102.13.008 Jul 2023 07:45 minor feature:
102.12.013 Jun 2023 06:45 minor feature:
102.11.229 May 2023 03:25 minor feature:
102.11.014 May 2023 12:45 minor feature:
102.10.130 Apr 2023 03:16 minor feature:
102.10.015 Apr 2023 08:05 minor feature:
102.9.131 Mar 2023 06:45 minor feature:
102.9.016 Mar 2023 03:17 minor feature:
102.8.019 Feb 2023 12:05 minor feature:
102.7.104 Feb 2023 14:05 minor feature:
102.7.020 Jan 2023 07:25 minor feature:
102.6.122 Dec 2022 03:16 minor feature:
102.5.107 Dec 2022 06:45 minor feature:
102.5.023 Nov 2022 03:17 minor feature:
102.4.208 Nov 2022 03:17 minor feature:
102.4.025 Oct 2022 03:16 minor feature:
102.3.210 Oct 2022 06:45 minor feature:
102.3.025 Sep 2022 07:25 minor feature:
102.2.211 Sep 2022 03:16 minor feature:
102.2.027 Aug 2022 03:25 minor feature:
102.1.213 Aug 2022 03:17 minor feature:
102.1.029 Jul 2022 06:45 minor feature:
102.0.214 Jul 2022 10:05 minor feature:
102.029 Jun 2022 13:25 minor feature:
91.10.005 Jun 2022 03:16 minor feature:
91.9.121 May 2022 03:45 minor feature:
91.9.006 May 2022 03:25 minor feature:
91.8.121 Apr 2022 03:16 minor feature:
91.8.006 Apr 2022 06:45 minor feature:
91.7.011 Mar 2022 03:16 minor feature:
91.6.124 Feb 2022 03:19 minor feature:
91.6.010 Feb 2022 03:16 minor feature:
91.5.127 Jan 2022 03:16 minor feature:
91.5.012 Jan 2022 06:45 minor feature:
91.4.124 Dec 2021 07:05 minor feature:
91.4.009 Dec 2021 11:25 minor feature:
91.3.224 Nov 2021 03:16 minor feature:
91.3.009 Nov 2021 10:25 minor feature:
91.2.125 Oct 2021 06:45 minor feature:
91.2.011 Oct 2021 01:45 minor feature:
91.1.125 Sep 2021 03:25 minor feature:
91.1.010 Sep 2021 06:45 minor feature:
91.0.326 Aug 2021 09:45 minor feature:
78.13.011 Aug 2021 07:05 minor feature:
78.12.014 Jul 2021 13:45 minor feature:
78.11.011 Jun 2021 09:45 minor feature:
78.10.228 May 2021 03:16 minor feature:
78.10.113 May 2021 09:25 minor feature:
78.10.028 Apr 2021 06:25 minor feature:
78.9.113 Apr 2021 06:25 minor feature:
78.9.029 Mar 2021 10:25 minor feature:
78.8.114 Mar 2021 07:05 minor feature:
78.8.027 Feb 2021 06:45 minor feature:
78.7.112 Feb 2021 06:25 minor feature:
78.7.028 Jan 2021 03:17 minor feature:
78.6.113 Jan 2021 03:17 minor feature:
78.6.016 Dec 2020 09:25 minor feature:
78.5.001 Dec 2020 06:45 minor feature:
78.4.316 Nov 2020 01:25 minor feature:
78.4.031 Oct 2020 18:45 minor feature:
78.3.216 Oct 2020 06:25 minor feature:
78.3.102 Oct 2020 00:25 minor feature:
78.2.216 Sep 2020 09:25 minor feature:
78.2.101 Sep 2020 09:25 minor feature:
78.1.117 Aug 2020 03:45 minor feature:
78.1.002 Aug 2020 11:05 minor feature:
78.018 Jul 2020 11:05 minor feature:
68.10.002 Jul 2020 06:25 minor feature:
68.9.007 Jun 2020 03:15 minor feature:
68.8.123 May 2020 13:45 minor feature:
68.8.006 May 2020 05:45 minor feature:
68.7.009 Apr 2020 09:45 minor feature:
68.6.013 Mar 2020 08:25 minor feature:
68.5.012 Feb 2020 03:15 minor feature:
68.4.225 Jan 2020 20:25 minor feature:
68.4.110 Jan 2020 22:05 minor feature:
68.3.124 Dec 2019 03:15 minor feature:
68.3.005 Dec 2019 05:45 minor feature:
68.2.213 Nov 2019 13:05 minor feature:
68.2.029 Oct 2019 23:05 minor feature:
68.1.214 Oct 2019 10:05 minor feature:
68.1.129 Sep 2019 06:25 minor feature:
68.1.013 Sep 2019 15:45 minor feature:
68.029 Aug 2019 07:05 minor feature:
60.8.014 Jul 2019 03:17 minor feature:
60.7.229 Jun 2019 13:25 minor feature:
60.7.114 Jun 2019 06:45 minor feature:
60.7.022 May 2019 18:45 minor feature:
60.6.101 Apr 2019 03:15 minor feature:
60.5.317 Mar 2019 03:15 minor feature:
60.5.202 Mar 2019 03:16 minor feature:
60.5.115 Feb 2019 08:25 minor feature:
60.5.030 Jan 2019 10:45 minor feature:
60.4.001 Jan 2019 20:25 minor feature:
60.3.317 Dec 2018 21:45 minor feature:
60.3.202 Dec 2018 07:45 minor feature:
60.3.117 Nov 2018 15:45 minor feature:
60.3.002 Nov 2018 11:45 minor feature:
60.2.104 Oct 2018 02:05 minor feature:
60.016 Aug 2018 01:05 minor feature:
52.7.024 Mar 2018 11:05 minor feature:
52.6.026 Jan 2018 06:05 minor feature:
52.5.223 Dec 2017 04:45 minor feature:
52.5.024 Nov 2017 05:45 minor feature:
52.4.007 Oct 2017 03:15 minor feature:
52.3.017 Aug 2017 03:15 minor feature:
52.2.130 Jun 2017 03:15 minor feature:
52.2.015 Jun 2017 18:05 minor feature:
52.1.125 May 2017 05:25 minor feature:
52.1.010 May 2017 06:25 minor feature:
52.0.125 Apr 2017 03:15 minor feature:
52.011 Apr 2017 03:15 minor feature:
45.8.008 Mar 2017 06:25 minor feature:
45.7.109 Feb 2017 06:25 minor feature:
45.7.026 Jan 2017 03:15 minor feature:
45.6.001 Jan 2017 03:15 minor feature:
45.5.106 Dec 2016 03:15 minor feature:
45.5.021 Nov 2016 21:25 minor feature:
45.4.004 Oct 2016 23:45 minor feature:
45.3.001 Sep 2016 06:05 minor feature:
45.2.006 Jul 2016 03:15 minor feature: Invitations to events could not be printed. Dragging and dropping of contacts from the contact list onto an addressbook while All Addressbooks is selected moved only one contact, Falsely reported not enough disk space during compacting, Links were not always detected properly in the message body (terminated early on " ", some long links not detected at all)
45.1.131 May 2016 06:45 minor feature: When entering members into a mailing list, the enter key dismissed the panel instead of just moving onto the next line, Email without HTML elements was sent as HTML, despite "Delivery Format: Auto-detect" option, Options applied to a template were lost when the template was used. Contacts could not be deleted when they were found through a search, Views from global searches did not respect "mail.threadpane.use_correspondents"
45.1.012 May 2016 03:15 minor feature: Drag amp; Drop a contact name from Thunderbird address book (list view) to address box in a new message compose window failed. UI elements became larger when moused over on retina displays/monitor on Mac OS X, DIGEST-MD5 authentication in JS-XMPP failed for some users (now disabled). Font indicator in compose falsely claimed certain fonts were not installed. Printing failed in composition window. Various improvements in handling of message compose in paragraph mode. Automatic correspondents column upgrade disabled
45.017 Apr 2016 18:19 major feature: When sending e-mail which was composed using Chinese, Japanese or Korean characters, unwanted extra spaces were inserted within the text. Spell checker checked spelling in invisible HTML parts of the message. When saving a draft that is edited as new message, original draft was overwritten. External images not displayed in reply/forward, Crashed in some cases while parsing IMAP messages. Properly preserve pre-formatted blocks in message replies. Copy/paste from a plain text editor lost white-space (multiple spaces/blanks, tabs, newlines), "Open Draft"/"Forward"/"Edit As New"/"Reply" created message composition with incorrect character encoding. : Grouped By view sort direction change was broken, plus enabled custom column grouping. : New emails into a mailbox did not adhere to sort order by received. : Box.com attachments failed to upload. : Drag and drop of multiple attachments failed to OS file folder. XMPP had connection problems for users with large rosters.
31.023 Jul 2014 21:27 minor feature: The version number has been synchronized with Firefox because of renewed development progress. It also uses the new Australis theme. Multiple bugs have been fixed. Autocompletion has been enhanced. The insecure NTLMv1 authorization scheme has been disabled.