Newest Extensions
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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...
UMTools
Requires Restart
Add new options to TB's Unsent Messages behavior.. ...
TB Change From and Fcc on Compose Extension
Requires Restart
You can now temporarily change the from and fcc on...
SendTools
Requires Restart
Add SendAt option to the compose window to allow sending a message on a particular date and...
TB Reset Quote Header Extension
Requires Restart
You can now modify the look of the quote header on replies. Quote header templates are included in the xpi ( open the xpi with a archive program like winzip and extract the two txt files) Then, in the extension's options page, type the word...
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...
Move Search Items
Requires Restart
Move the message search items to the...
Fix Tb Titlebar Extension
Requires Restart
You can now modify the Titlebar of TB's main...
Edit HTML Source
Requires Restart
You can now edit the HTML source in the Compose...
Tb AutoSave Extension
Requires Restart
You can now autosave messages from TB upon...
Preferential (New GUID)
Requires Restart
Advanced preferences manager for Mozilla-based...
Quicktext
Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.
traduku
Requires Restart
Translate text from English and other languages into Esperanto.
Traduku tekston de la angla kaj aliaj lingvoj al Esperanto.
Uses/uzas https://lingvo.org/traduku (try as side bar/provu kiel flankfenestro).
Signature Switch
Switch the signature on/off or choose a new one from your predefined set.
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...
Russ Key
Requires Restart
Allows typing in phonetic Russian and transforming Russian translit into Cyrillic...
To create your own collections, you must have a Mozilla Add-ons account.