Up & Coming Extensions

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Provider for Google Calendar

Allows bidirectional access to Google Calendar

Rated 4 out of 5 stars (514)
287,032 users

Maximize Message Pane

Maximize message pane by collapsing the thread pane. You can read a message in larger area without opening a new message window...

Rated 4 out of 5 stars (22)
3,952 users

xSidebar for Thunderbird

Firefox sidebars for Thunderbird.

Rated 4 out of 5 stars (11)
1,297 users

Super Date Format

Fully customize the date format of the Date/Received column.

Rated 4 out of 5 stars (7)
2,040 users

Filter Of Filters

A search bar for vast number of filters.If you have a vast number of filters, it is difficult to find out a certain filter to edit. This add is for helping you on this situation.

Rated 5 out of 5 stars (8)
1,018 users

Folder Pane View Switcher

Add arrow buttons for rotating among folder views, and switch to "All Folders" view when hovering over the folder pane during drag & drop.

Rated 5 out of 5 stars (31)
10,536 users

Return Receipt Toolbar Button

Allow you to add a Return Receipt button to mail compose window toolbar.

Rated 4 out of 5 stars (12)
5,272 users

BiDi Mail UI

Direction control and BiDi-related charset misdetection correction

Rated 4 out of 5 stars (24)
3,393 users

ThunderPlunger

This add-on provides a few new ways to keep Thunderbird clean.

Rated 4 out of 5 stars (27)
4,138 users

Google Contacts

Access to Google contacts and synchronize them with Thunderbird address books.

Rated 4 out of 5 stars (218)
98,834 users

Old-style smilies

Reverts the smilies in Thunderbird to those of version 2.

Rated 4 out of 5 stars (1)
2,185 users

Zindus Featured

Google and Zimbra contact sync for Thunderbird. (TB 24 and above NOT supported)

Rated 4 out of 5 stars (196)
51,122 users

Sender Verification Anti-Phishing Extension

Protects you from phishing attacks by verifying the From: address domain name of emails as you read them. Sender Policy Framework (SPF) and DNS-based reputation lists are used.

Rated 4 out of 5 stars (20)
1,380 users

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 (378)
271,153 users

Mark All Read Button

Adds toolbar buttons to Mark All emails as read and Mark Thread as read.

Rated 4 out of 5 stars (26)
4,392 users

SelectionSK

Pops up user menu with useful tools (copy, highlight, translation, search, etc.) when text is selected with the mouse

Rated 5 out of 5 stars (42)
1,529 users

Simple Clocks

Track time in locations world-wide

Rated 4 out of 5 stars (27)
5,953 users

Tab Wheel Scroll

Switch tabs by scrolling with the mouse wheel in the tab bar.

Rated 4 out of 5 stars (91)
11,445 users

Gather the senders !

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

Rated 4 out of 5 stars (19)
2,268 users

BlunderDelay

Thunderbird Extension: AutoSend Unsent Messages. Flushes entire outbox at regular intervals.

Rated 4 out of 5 stars (13)
1,239 users