Message and News Reading

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Slideshow Requires Restart

Displays a slideshow of picture attachments. When email has attached pictures, it displays "View as Slideshow" button next to the attachment. Button click pops a slideshow window with all the images, allowing you to zoom in/out, save...

Rated 5 out of 5 stars (68)
7,851 users

ThunderUpdate Requires Restart

Have ThunderBrowse version 2.8.7 or earlier? Install 3.0 from here: https://addons.mozilla.org/en-US/thunderbird/addon/5373 YOU DO NOT NEED TO INSTALL THUNDERUPDATE. GO INSTALL THUNDERBROWSE INSTEAD.

Rated 5 out of 5 stars (11)
28 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)
82 users

Show InOut Requires Restart

Adds two columns to the list of mails. One shows an indicator wether a mail is incoming or outgoing, the other shows the sender or the recipient of the mail respectively...

Rated 5 out of 5 stars (42)
2,682 users

Smiley Fixer Requires Restart

Fixes Wingding Smileys in Outlook-generated emails

Rated 5 out of 5 stars (17)
6,298 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)
1,756 users

FolderFlags Requires Restart

Allows users to edit the flags Thunderbird sets on folders.

Rated 5 out of 5 stars (8)
4,852 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 (17)
59 users

JunQuilla Requires Restart

1) adds column with percent likelihood that a message is spam, 2) extends junk status column to show why a message was classified as junk/good, 3) adds an Uncertain folder for messages needing user decision.

Rated 5 out of 5 stars (18)
4,574 users

YouTube 2 Player

Send YouTube video links to an external player, downloader, etc,

Rated 5 out of 5 stars (6)
1,487 users

Equations Requires Restart

Insert inline LaTeX equations into e-mail messages.

Rated 5 out of 5 stars (22)
139 users

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 (150)
78,839 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 (44)
16,270 users

Reply In Group Requires Restart

Adds "Reply In Group" and "Reply to sender" toolbar buttons to the main window. So it's easier to reply in Usenet...

Rated 5 out of 5 stars (6)
7 users

Right Encoding Requires Restart

Adds the Character Encoding menu to the context menu

Rated 5 out of 5 stars (19)
4,433 users

ThreadVis Requires Restart

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

Rated 4 out of 5 stars (110)
8,528 users

Text Link Requires Restart

Allows URI texts written in webpages to be loaded by double clicks.

Rated 4 out of 5 stars (299)
130,416 users

BorderColors Requires Restart

Color-codes compose windows depending the active e-mail identity, to avoid sending messages from the wrong account.

Rated 4 out of 5 stars (38)
461 users

Show All Body Parts

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

Rated 5 out of 5 stars (17)
8,908 users

Manually sort folders Requires Restart

This extension allows you to manually sort (order) your folders in the folder pane of Thunderbird or automatically sort them, but in a better way. This extension also allows you to re-order accounts in the folder pane.

Rated 4 out of 5 stars (134)
153,271 users