Add-ons
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Check your emails for spelling and grammar issues79,703 users -
The best Translator for Thunderbird!
Supported translators:
Google Translate
Microsoft Translator
DeepL
Yandex
Яндекс Переводчик
Google 翻译
百度翻译57,240 users -
This extension is based on László Németh's Hungarian Dictionary8,888 users -
Australian English Dictionary for Mozilla applications.8,319 users -
![Icon for Grammalecte [fr] (for Thunderbird)](https://addons.thunderbird.net/user-media/addon_icons/809/809689-32.png?modified=1602750472)
French grammar checker. Included: conjugation tool, text formatter and spelling dictionaries.6,542 users
Top Rated See all »
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Word translation in tooltip with English⟷Croatian dictionary already incorporated.0 users -
Look up Japanese words with the hover of a mouse.
After enabling the add-on from the toolbar (or press Alt+R) simply hover over Japanese text and a popup displays corresponding dictionary definitions.255 users -
As-you-type phonetic conversion of text from one alphabet to another, as well as transliteration/detransliteration of selected text anywhere within documents. Supports multiple languages and custom transliteration schemes.10 users -
CantoFish is a popup Cantonese-English dictionary for Firefox. It contains over 200,000 entries and works with both traditional and simplified Chinese characters. The Yale and Jyutping romanization systems are supported, as well as Mandarin pinyin.0 users -
Ћирилично/латинично пресловљавање, виртуална ћирилична тастатура - Serbian Cyrillic/Latin transliteration and Virtual Cyrillic keyboard0 users -
An easier management of the user interface language32 users
Recently Added See all »
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Easily write emails mixing Right-to-Left languages (like Arabic, Persian, Hebrew) with Left-to-Right languages (like English). Automatically formats your text as you type.0 users -
Translates the open email to the selected language — shows translation in a split view inside Thunderbird.105 users -
Translate your emails directly in Thunderbird, reversibly, using Google Translate.Translate emails directly in Thunderbird — reversibly, on demand, via Google Translate. One click to translate, one click to restore the original.56 users -
Traduisez n'importe quel texte de vos emails d'un clic droit : choisissez la langue, l'IA détecte la source et traduit. Fonctionne avec Google Gemini, ChatGPT ou Claude. Clé API requise.21 users -
一键翻译邮件全文，支持本地 OpenAI 兼容大模型接口如ollama、llama.cpp等。
Translate entire email content with one click, supporting local OpenAI-compatible large model interfaces such as Ollama, llama.cpp, etc.1 user -
Elevate your emails with AI! This tool analyzes selected text, corrects mistakes, and rewrites casual phrases into a confident, professional tone in seconds. (Requires a free Gemini API key)21 users
See all 115 extensions in Language Support »
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