Message and News Reading

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Remove Duplicate Messages (Alternate) Requires Restart

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 (171)
66,957 users

Quote Colors Requires Restart

Quote Colors allows you to select text and background colors of different quote levels which are applied when reading or printing mail/news messages. Additionally, you can choose between graphical and traditional plain text quoting display mode.

Rated 4 out of 5 stars (45)
5,182 users

Simple Search-For Extension Requires Restart

Adds a "Search for" item to Thunderbird's context menu, like in Firefox.

Rated 5 out of 5 stars (14)
907 users

Column Reader

Web reader for wide screens and long documents. Read with pleasure in attractive layouts.

Rated 5 out of 5 stars (14)
354 users

Search for Sender Requires Restart

Adds two items to the threadpane context menu, 'Search for this sender' and 'Search for this subject'. This basically takes the sender or subject of the selected message, copies it to the QuickSearch window and starts the search.

Rated 5 out of 5 stars (21)
1,834 users

Equations Requires Restart

Insert inline LaTeX equations into e-mail messages.

Rated 5 out of 5 stars (22)
5 users

Email Notification Randomizer Requires Restart

Extension to randomize the email notification sound. Each time an email is received, the configured email notification sound is updated from the set of wav files in the configured folder...

Rated 5 out of 5 stars (9)
10 users

Show All Body Parts

Enable the View | Message Body As | All Body Parts message display mode.

Rated 5 out of 5 stars (19)
7,566 users

Leet Key Requires Restart

Transforms typed or static text to L337, ROT13, BASE64, HEX, URL, BIN, DES, AES, Morse code, DVORAK keyboard layout and to lower/to upper case functionality, Leet Font...

Rated 4 out of 5 stars (52)
2,214 users

POW -- Plain Old Webserver Requires Restart

Turn the web on its head with the Plain Old Webserver (POW), which adds a server to your browser.

Rated 5 out of 5 stars (16)
12 users

Folder Account Requires Restart

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 (50)
2,298 users

ThreadVis Requires Restart

Displays a small graphic visualising the context (thread) of the currently selected email.

Rated 4 out of 5 stars (110)
5,592 users

EditEmailSubject (Edit email Subject) Requires Restart

This module allows you to change/edit email subjects

Rated 4 out of 5 stars (36)
8,648 users

ThunderPEC Requires Restart

ThunderPEC semplifica la gestione della Posta Elettronica Certificata (PEC) e delle comunicazioni PCT e FatturaPA in Thunderbird.

Rated 5 out of 5 stars (11)
22,946 users

Gather the senders ! Requires Restart

Select all the mails in a directory sent by the selected authors.

Rated 4 out of 5 stars (20)
1,260 users

Show Address Only Requires Restart

Adds columns to display Sender/Recipients mailaddress only.

Rated 4 out of 5 stars (29)
3,790 users

Image Zoom Requires Restart

Adds zoom and rotation functionality for images...

Rated 4 out of 5 stars (353)
69,299 users

Enhanced Priority Display Requires Restart

Enhanced thread pane display of message priorities.

Rated 5 out of 5 stars (7)
1,145 users

Display Mail User Agent Requires Restart

Displays icon for user agent of received mails.

Rated 4 out of 5 stars (106)
26,717 users

Menu On Top (SuperMenu Avatar)

Move the Thunderbird menu bar to the top. Choose from a selection of visual styles + colors. Add frequently used bookmarks and an avatar icon without wasting precious screen space. Bookmark your favorite sites, emails, folders or configuration pages.

Rated 5 out of 5 stars (7)
1,218 users