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ExQuilla for Exchange

Thunderbird email accounts connecting to Microsoft Exchange Web Services.

Rated 4 out of 5 stars (134)
3,979 users
Updated May 28, 2025

Inbox Actions

Inbox Actions add convenient interactions to messages allowing users to interact with an product or service all without the user even having to open their email.

Not yet rated
7 users
Updated May 8, 2025

Expression (Power) Message/Calendar Search - NG

* Mail / calendar search
* Fuzzy search: Bucher also finds Bücher
* Visual search query builder
* Search window as a tab
* New search and filter criteria: reply-to, bcc, to-only, filename, xnote, date range, time, etc
* to A but not to B + more

Rated 4 out of 5 stars (51)
2,617 users
Updated May 5, 2025

XNote++

Persistent sticky notes associated to emails. You can fulltext search with constraints/email them/print/bookmark/copy to clipboard.

If you have a large screen, you can even display the notes outside of TB's main window, so it won't hide anything.

Rated 4 out of 5 stars (135)
15,514 users
Updated May 5, 2025

Thunderbird Conversations Featured

This addon provides a conversation view for Thunderbird, grouping messages together and allowing you to reply "inline" thus providing a more efficient workflow.

Rated 4 out of 5 stars (578)
24,050 users
Updated May 5, 2025

Filter on Folder Button

act. version 1.6.2 for Tb >= 128.x

Toolbar menu button with filter functions.
- run filter on folder
- run filter on message
- show filter dlg
- create filter from message

with hotkeys, theme support, languages de, en, fr, es, it

Rated 4 out of 5 stars (27)
1,348 users
Updated May 5, 2025

Search Selector

Плагин для выбора поисковой системы при поиске выделенного текста.

Not yet rated
1 user
Updated April 30, 2025

Custom Headers View

Display custom email headers in the mail header toolbar. This extension allows you to make visible specific headers in the toolbar, like received, date, DuckDuckGo's duck-original- headers to show the sender's email in the original format, etc.

Not yet rated
44 users
Updated April 24, 2025

Header Tools Lite

Allows to modify the header and the source of messages

Rated 4 out of 5 stars (52)
2,484 users
Updated April 17, 2025

Mail Extractor

Mail Extractor for Thunderbird quickly extracts and copies email addresses from selected messages. It now also downloads attachments as ZIP files.

Rated 4 out of 5 stars (7)
764 users
Updated April 14, 2025

Folder Account

Lets you associate user accounts and identities with specific folders. Great for multiple users who share TB, or for managing mailing lists.

Rated 4 out of 5 stars (64)
1,987 users
Updated April 14, 2025

Remove Duplicate Messages

Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).

Rated 4 out of 5 stars (313)
96,667 users
Updated April 11, 2025

Web Translate

The best Translator for Thunderbird!

Supported translators:
Google Translate
Microsoft Translator
DeepL
Yandex
Яндекс Переводчик
Google 翻译
百度翻译

Rated 4 out of 5 stars (35)
50,998 users
Updated April 10, 2025

CollectAddresses

Collect all sender/recipient/... addresses and store in an addressbook

Rated 5 out of 5 stars (6)
1,244 users
Updated April 10, 2025

Joplin Export

Export your emails from Thunderbird to Joplin. To use the add-on, a running Joplin application is required (https://joplinapp.org).

Please note that this is not an official product of the Joplin team, but rather developed by a private person.

Rated 5 out of 5 stars (12)
450 users
Updated April 8, 2025

Max Image Width

Limit all images in all messages to the message pane width.

Not yet rated
46 users
Updated April 8, 2025

Toggle Headers

Allows to switch between the normal header view and viewing all headers when viewing a message by using a keyboard shortcut (Ctrl+H).

Rated 4 out of 5 stars (13)
1,158 users
Updated April 7, 2025

Toggle Quotes (Collapse Quotes)

Adds a Toggle Quotes button, allows to collapse quotes.

Rated 4 out of 5 stars (1)
161 users
Updated April 7, 2025

BiDi Mail UI

Direction control and BiDi-related charset misdetection correction

Rated 5 out of 5 stars (54)
1,714 users
Updated April 4, 2025

Open by Message-ID

For any 'mid', 'mailto', 'news', or 'nntp' URI in the message body that may contain a Message-ID, this adds menu items to the context menu to attempt to open the message for that ID from the message database, from a news server, or in a web browser.

Rated 5 out of 5 stars (1)
21 users
Updated March 31, 2025