Gmail Buttons Requires Restart
Adds message-specific buttons to Thuderbird that are consistent with the way Gmail handles Trash and Spam.
ProfileSwitcher Requires Restart
It adds some options to launch easily other profiles and the Profile Manager.
PrintingTools Requires Restart
Adds some options to print messages and addressbooks
Mail Redirect Requires Restart Featured
Allow to redirect (a.k.a. "remail") mail messages to other recipients.
Google Keep for Thunderbird
Quicktext Requires Restart
Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.
Moves the toolbar back above the tabbar.
LightningButton Requires Restart
Toolbar-Buttons for Lightning; advances the feature to get rid of the tabbar.
FileRun for Filelink Requires Restart
Add FileRun support to Thunderbird's Filelink feature.
IMAP Quota (Free Space) Requires Restart
This Thunderbird addon lets you customize the IMAP quota statusbar panel.
GmailOutOfOffice Requires Restart
Out of Office for Gmail
This add-on allows you to set an out of office auto-responder in your gmail account. It adds a button in the toolbar customization list.
Dorando keyconfig Requires Restart
A modified Dorando's addon to rebind keyboard shortcuts. It is designed to be a drop-in replacement, keeping your old settings. (See details for upgrade instructions.)
ThunderStats! Your Thunderbird Statistics! Requires Restart
Do you remember the old good Eudora statistics? Do you miss them?
Using this addon you can finally keep an eye on how you use your beloved Thunderbird!
ImportExportTools Requires Restart
Adds some tools to import and export folders and messages
Subject Manager Requires Restart
Manages subject of composed emails.
'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions.
Beta builds on versions page!
Caret Out Requires Restart
Disables change of the caret browse mode by shortcut key(F7).
DownloadStudio Firefox Integration Requires Restart
Firefox Integration for DownloadStudio
DOM Inspector Plus! [dm] Requires Restart
Improved DOM Inspector! [dm version]. Box Model new layout & more data, see screenshot!. Horizontal scroll for Dom-Tree, and some more.
Inspects the structure and properties of a window and its contents.