Most Popular Extensions
nntpthreads Requires Restart
Nntpthreads lets you add up to four new buttons in the toolbar to easily access the menu item from "View > Threads"...
Tategaki Requires Restart
Tategaki allows vertical writing-mode on mail compose window.
This addon provides options for starting the developer tools server. It is especially valuable in XULRunner Apps where there is no UI to start the server.
NOTE: This addon is not mandatory in Firefox or Thunderbird, as support is built in.
Bulk List Filter Requires Restart
The Bulk List filter addon provides a set of preconfigured search folders for popular services such as Facebook, eBay, Amazon and more.
AastraClickToCall Requires Restart
Converts telephone numbers into clickable links for use with Aastra IP Phones
Delete Only Empty Folder Requires Restart
Disallows to delete not-empty mail folders.
Open google instantly with this super fast add on.And its just < 10KB.!
No need to type google in your address bar anymore.Just try this awesome to open up google instantly.
tuneMDNDSN Requires Restart
fix behavior of notifications checkboxes in compose window when editing msg as new
Perapera Japanese-Russian Dictionary File Requires Restart
This is additional dictionary file for use with the Perapera Japanese Pop-up Dictionary add-on.
CorrectLink Requires Restart
Do you have a trouble that Thunderbird have made a link with non-ASCII characters after URL in text/plain message ?
CorrectLink solve this issue.
Enable afp protocol (afp://)
Archived-At Requires Restart
Add menu items for copying Archived-At (RFC 5064) URLs from emails
Mukparasi Korean-English Dictionary File Requires Restart
A Korean-English dictionary file for Mukparasi.
Thunderbird Are Go Requires Restart
This plays audio to boost emotion when Mozilla Thunderbird start up.
Mozilla Thunderbird Are Go!
This extension will remember the last dictionary used in the Mail Compose window and use it when composing new messages.
Force Authentication at Startup. Requires Restart
Always ask password and hide UI at the startup.
Mailopen Requires Restart
Open an email file from the commandline