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OpenAI Proofreader
This extension uses OpenAI gpt-4o-mini to proofread emails when the user clicks the extension icon.
Usage requires an OpenAI API key. OpenAI does not offer a free usage tier. Proofreading a 4-5 paragraph email costs a fraction of a cent.
ThunderCalc
A simple calculator for Thunderbird/Sea Monkey/Firefox, available in a pop-up window or a separate tab.
Aranese spell checker
Balochi Spellchecker for UniBal Script
This add-on is a Balochi spellchecker based on the UniBal Balochi script.
This is a pre-beta version as the dictionary has 1000+ words and not all Balochi Affix rules are implemented.
Please use it and give your feedback
Tatar spellchecker dictionary
Tatar dictionary for spell-checking in Firefox and Thunderbird.
Орфографический словарь Firefox и Thunderbird для проверки правописания татарского языка.
Spellchecker Ladin (Gherdëina)
Lower Sorbian dictionary
Kiswahili Spell Checker
Babyish spellchecker
Open Tab
Folder Colors
Requires Restart
A fork of "Color Folders" (aka "Colored Folders") to support TB 68+. Applies custom colors to the folder tree in Thunderbird.
This add-on is superseded in TB78 by the built-in folder-color changer (in folder > Properties).
enUS deDE bilingual dictionary
This is a bilingual dictionary for American English and German Standard German.
It is meant for users who regularly write in German and English.
With it, you will not need to manually switch between dictionaries for the two languages.
Reply All Button
Add a "Reply All" button which never behaves like "Reply List". Intended to replace the Smart Reply button to avoid accidentally performing Reply List behavior.
To create your own collections, you must have a Mozilla Add-ons account.
