Add-ons
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Check your emails for spelling and grammar issues79,096 users -
The best Translator for Thunderbird!
Supported translators:
Google Translate
Microsoft Translator
DeepL
Yandex
Яндекс Переводчик
Google 翻译
百度翻译56,995 users -
This extension is based on László Németh's Hungarian Dictionary9,283 users -
Australian English Dictionary for Mozilla applications.8,393 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.7,491 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.261 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.12 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 language33 users
Recently Added See all »
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Translates the open email to the selected language — shows translation in a split view inside Thunderbird.0 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.1 user -
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.9 users -
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)20 users -
Inline grammar suggestions while composing email. You bring your own LLM via an Open AI-compatible provider, including local LLM; tested with LM Studio on Ubuntu and together.ai for cloud LLM. Defaults to fast and cheap google/gemma-3n-E4B-it1 user -
The add-on enhances your email inbox experience through AI (LLM) support.58 users
See all 115 extensions in Language Support »
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