Add-ons
Newest Extensions
Sort by:
Country Lookup
Requires Restart
Looks up the origin country and city of an e-mail message, using the IP address.
ClassicFox
Requires Restart
ClassicFox fixes problems with the appearance of the default theme in Windows Classic.
Edit As New
Requires Restart
Adds "Edit As New" toolbar button to the main...
Russian hot keys bugfix
Requires Restart
Makes hot keys work with Russian, Ukrainian and Hebrew keyboard layout in Linux and *BSD (needed only for GTK2 builds).
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...
SuperOffice Mail Link
Requires Restart
Archive mail in SuperOffice CRM software from Thunderbird
ConnSets
Requires Restart
"Connection/Configuration Settings Selector"...
Growl New Message Notification
Requires Restart
Displays a notification using Growl when a new message is received...
Define
Requires Restart
Search the definition of the highlighted text at Google...
CallingID Link Advisor
Requires Restart
CallingID Link Advisor verifies the links you see in Firefox and Thunderbird are safe before you follow them. When the mouse is placed over any link a risk assessment and the full details of the site owner are displayed, helping you evaluate the...
Dictionary Switcher
Requires Restart
Toggles dictionaries automatically or manually and displays the currently selected one
Change
Requires Restart
In-page Currency Conversion Extension for Thunderbird and Firefox...
MailClassifier
Requires Restart
The mailclassifier extension helps you to move the email in the right folder, it uses multi-level bayesian filtering...
AddTo Miru Directory Server
Requires Restart
The AddTo extension allows Thunderbird users to add contact cards direct to a shared miru directory server. Once added contact details are available via LDAP for auto-complete and address book search...
Get Selected Messages
Requires Restart
Adds the button on the toolbars "Get All New Messages", "Get Selected Messages" and "Get Starred Messages", the analog of button from File and File->Offline->Get Selected Messages, Get Starred Messages for loading selected messages by...
QuickFolders (Tabbed Folders)
The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.
See new mail at a glance after automatic filtering - supports quickFilters addon!
lernu-es
Requires Restart
Language learning : at every page load there appears a random Esperanto-Spanish word translated in the status bar. ...
Right Click Watch Ignore
Requires Restart
Adds "Watch Thread" and "Ignore Thread" to right click context menu in Thunderbird and Seamonkey.
XNote
Requires Restart
Persistent sticky notes for Thunderbird associated to mails...
Paste Feed Location
Requires Restart
Fix bug 296542 by adding a Paste context menu to the Feed Properties (add subscription) dialog.
To create your own collections, you must have a Mozilla Add-ons account.
