Message and News Reading
nntpthreads Requires Restart
Nntpthreads lets you add up to four new buttons in the toolbar to easily access the menu item from "View > Threads"...
Get/Send-Button (minimized MagicSLR) Requires Restart
A combined Get/Send-Button and a popup menu with additional functions.
You may want to use it together with the following Add-ons:
* Send Later Button (by me / Alexander Ihrig)
* Send Later (by jikamens)
ConfigDate Requires Restart
ConfigDate allows to configure the "Date" column in message threadpane. When displaying the message header, it is possible to display the (default) formated date or the senders local sent time (Date-String).
Leet Key Requires Restart
Transforms typed or static text to L337, ROT13, BASE64, HEX, URL, BIN, DES, AES, Morse code, DVORAK keyboard layout and to lower/to upper case functionality, Leet Font...
Message Notes Requires Restart
Add Notes to messages. Notes are stored in a plaintext file, typically in your profile. The plaintext notes file can be stored elsewhere to enable sharing of notes across a...
MessageID-Finder Requires Restart
MessageID-Finder is a addon for the Mozilla mail/news-client and Thunderbird which helps you to find the message to a certain...
Signature Requires Restart
insert custom text into posts and emails...
Display mailing list header Requires Restart
This extension implements RFC 2369 for Thunderbird: Special mailing list header fields in the mail are parsed, and the links are displayed in the extended header view. You can click them to simply go to the archive, request help or unsubscribe.
Display Mail User Agent Requires Restart
Displays icon for user agent of received mails.
Russ Key Requires Restart
Allows typing in phonetic Russian and transforming Russian translit into Cyrillic...
AttachmentExtractor Requires Restart
Extracts all attachments from selected messages and then can delete, detach or mark-read.
Bork Bork Bork! Requires Restart
The Swedish Chef travesty filter and URL blocker. View web pages or mail as spoken by the Swedish Chef like this...
"Zee Svedeesh Cheff trefesty feelter und URL blucker. Feeoo veb peges oor meeel es spukee by zee Svedeesh Cheff leeke-a thees."
infoRSS Requires Restart
Displays RSS, Atom, Twitter, parsed HTML and NNTP feed in a scrolling area in the status bar. Compatible with podcasting RSS which can be downloaded directly. It's also a good Google email notifier.
Quickfile Requires Restart
Quickfile is an extension for Mozilla Thunderbird which initially aimed to speed up filing of messages into your mail folder heirarchy but now includes features for navigation and folder creation...
QuoteCollapse Requires Restart
Collapse and expand quotes. Please see the extension homepage for further information.
Note that MozDev has shut down long ago (mailing list etc). Add-On homepage, source code and issue tracker are on GitHub, as linked on this page.
Sender Verification Anti-Phishing Extension Requires Restart
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.
RSS Editor Requires Restart
Desktop RSS editor for casual editing of RSS 2.0...
BiDi Mail UI Requires Restart
Direction control and BiDi-related charset misdetection correction
Folderpane Tools Requires Restart
Allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.
FlashGot Mass Downloader Requires Restart
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.