Add-ons
Message and News Reading
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Thunderbird Conversations
This addon provides a conversation view for Thunderbird, grouping messages together and allowing you to reply "inline" thus providing a more efficient workflow.
22,591 users
Most Popular See all »
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LookOut decodes winmail.dat (TNEF encoded) files that may come from a misconfigured Microsoft Exchange server or Outlook user allowing access to the original attachments
Support: Thunderbird120,351 users -
Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).95,384 users -
The best Translator for Thunderbird!
Supported translators:
Google Translate
Microsoft Translator
DeepL
Yandex
Яндекс Переводчик
Google 翻译
百度翻译54,070 users -
Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).39,253 users -
PrintingTools NG enables many layout and formatting options for printing messages with header borders, sorting, attachment lists etc. PDF output can be auto named and Page options can ease printer settings.
It is your printing toolbox.24,099 users -
This addon provides a conversation view for Thunderbird, grouping messages together and allowing you to reply "inline" thus providing a more efficient workflow.22,591 users
Top Rated See all »
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Word translation in tooltip with English⟷Croatian dictionary already incorporated.0 users -
Keyboard shortcuts to change folder, move/copy messages, with folder name auto-completion.614 users -
The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.
See new mail at a glance after automatic filtering - supports quickFilters addon!12,974 users -
No Message Pane Sort prevents accidental resorting of the message pane by disabling mouse button clicks on the column headers, thus, locking the sorting order of your emails.
It is still possible to sort messages by ctrl-clicking the header.3,612 users
Recently Added See all »
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You may need to install https://yellowgnu.com/wp-content/uploads/2026/07/OpenLinkWith-Windows-Helper-1.0.3.zip
Install the XPI in Thunderbird, then extract and run install-host.bat from the Windows helper ZIP.0 users -
A Thunderbird extension that integrates AI assistance directly into the compose window, letting users draft replies, fix grammar, translate text, and adjust tone without leaving the email client.2 users -
Parse Isabelle escape codes and replace them by unicode representation0 users
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Translates the open email to the selected language — shows translation in a split view inside Thunderbird.82 users -
Automatic out-of-office reply: custom text, account(s), date window. Note: only works while Thunderbird is running.39 users -
Find every subscription across all your accounts, unsubscribe with one click, and clean up the emails they left behind. Header + in-body link detection, alias-aware grouping, dry-run mode. 100% local — your mail never leaves Thunderbird.88 users
See all 554 extensions in Message and News Reading »
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