Message and News Reading

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Show InOut

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 (31)
3,230 users
Updated April 8, 2014

CALDAV - Search/Subscribe

Add CalDAV search & subscribe feature to Lightning

Rated 1 out of 5 stars (5)
2,945 users
Updated April 7, 2014

Bamboo Feed Reader

Feed reader | RSS - ATOM - OPML

Rated 4 out of 5 stars (132)
13,969 users
Updated April 1, 2014

Theme Font & Size Changer

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

Rated 5 out of 5 stars (111)
91,576 users
Updated March 21, 2014

Send and Archive

Adds a button to send an email and archive the original message.

Rated 5 out of 5 stars (5)
323 users
Updated March 19, 2014

Blend In

Blends OS-related values in User-Agent HTTP request header & a number of JS properties, so that Firefox (Thunderbird) appears to sites visited as running on the OS used the most in the world. Since 18.0t17.0.2 Windows is blended by default as well.

Rated 5 out of 5 stars (4)
549 users
Updated March 19, 2014

Webpage Screenshot in Firefox (♥♥♥♥♥)

FireShot Webpage Screenshots captures webpage screenshot entirely (see demo: http://bit.ly/RlBQMV)

The screenshot can be quickly annotated and:

+ Uploaded
+ Saved as PDF/PNG/GIF/JPEG/BMP
+ Sent to clipboard
+ Printed
+ E-Mailed
+ Exported

Rated 5 out of 5 stars (373)
306,967 users
Updated March 13, 2014

FlashGot Mass Downloader

Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.

Rated 5 out of 5 stars (424)
1,411,245 users
Updated March 12, 2014

Mnenhy

The primary goal of the Mnenhy project is to make some enhancements to SeaMonkey MailNews/Thunderbird, since there're still plenty of comfort functions missing if compared to Netscape 4.x and other mail and news clients.

Rated 4 out of 5 stars (28)
4,088 users
Updated March 7, 2014

Header Tools Lite

Allows to modify the header and the source of messages

Rated 5 out of 5 stars (13)
3,992 users
Updated March 6, 2014

P7MON

Abilita la gestione alternativa degli allegati P7M

Not yet rated
12 users
Updated March 6, 2014

ExQuilla for Microsoft Exchange

Thunderbird email accounts, including contacts, connecting to Microsoft Exchange Web Services.

Rated 3 out of 5 stars (56)
12,233 users
Updated March 6, 2014

Follow Broken Lotus Notes Links

Fixes the HREF on MASFLOW links in emails from Lotus Notes.
If you dont know what that is you do not need this.

Not yet rated
52 users
Updated February 25, 2014

Winmail Opener Bridge

Opens attached winmail.dat by Winmail Opener automatically.

Not yet rated
70 users
Updated February 24, 2014

ColumnsWizard

A Thunderbird extension that shows hidden columns in the Conversation Tab and in Search Results.
From version 3.0 is also possible to add Custom Columns not originally present in Thunderbird.

Rated 5 out of 5 stars (2)
167 users
Updated February 22, 2014

Account Colors

Associates user-defined colors with accounts and identities. Applies these colors to accounts, identities, folders, message list, message headers and compose headers. Users will always know which accounts/identities they are working with.

Rated 4 out of 5 stars (68)
9,421 users
Updated February 19, 2014

Todoist for Thunderbird

Todoist is a leading online task manager and we manage millions of todos! Todoist for Thunderbird makes it super easy to manage your todos and email directly from Thunderbird.

Watch a short video:
https://www.youtube.com/watch?v=VixEQJb5Qc0

Rated 4 out of 5 stars (9)
4,501 users
Updated February 18, 2014

SavedSearchThemAll

A Thunderbird extension to automagically extend all the saved searches to all the foders!

Rated 4 out of 5 stars (2)
298 users
Updated February 17, 2014

Copy Sent to Current

Allows to place a copy of sent messages (aka FCC) into the currently active folder or any other folder you choose, when you create the message. Usually the copies are placed into the 'Sent' folder. For replies, you may also move the original message.

Rated 4 out of 5 stars (51)
3,720 users
Updated February 16, 2014

Awesome Auto Archive No Restart

Automatically do Archive/Copy/Delete/Move actions based on user defined rules

Rated 5 out of 5 stars (2)
898 users
Updated February 14, 2014