Add-ons
Magic Translator 2.3.10
by MTF Karukera
Translate emails in reading and compose windows directly inside Thunderbird, reversibly, using Google, DeepL, or LLMs (Gemini, Mistral, OpenAI, Ollama, LM Studio).
About this Add-on
Magic Translator is the premier translation add-on for Mozilla Thunderbird, allowing you to read, understand, and compose foreign emails seamlessly.
Reading Pane Translation
Compose Mode: Translate Before Sending
Multi-Engine and LLM Translation Hub
Privacy and Performance First
Effortless Workflow
Reading Pane Translation
- Instant translation right within the message reading pane without opening external browser tabs.
- Optional zero-click mode: automatically translate foreign emails upon opening with zero clicks (100% offline via Thunderbird built-in CLD2 detector).
- Optional 1-click mode: translate immediately upon clicking the toolbar button or pressing Alt+Shift+T.
- Smart dual translation & inversion: automatically switches to an alternate target language or swaps source/target if the message is already in your primary language.
- Interactive engine badge with live connection status dot and direct settings access.
- One-click original message restoration via the Original button.
- Clean closing and discrete pill minimization to keep your email text clear and unobstructed.
Compose Mode: Translate Before Sending
- Dedicated toolbar button in the message composition window to translate drafts on the fly.
- Flexible translation scope: translate Subject, full message Body, or selected text only.
- In-place surgical text replacement preserving your existing draft layout.
- One-click original draft restoration via Restore original.
Multi-Engine and LLM Translation Hub
- Google Translate (default): 100% free, ready to use with zero setup (equipped with automatic seamless fallback to MyMemory during traffic spikes).
- MyMemory (Free): No API key required (5,000 to 50,000 chars/day with an optional email address).
- DeepL API (Free and Pro): Industry-standard linguistic precision for professional emails.
- Google Gemini API (Cloud AI): Real-time official model synchronization and ultra-fast
gemini-2.5-flash. - OpenAI-Compatible LLM Hub: Connect OpenAI, Groq Cloud, Mistral AI, or local Ollama and LM Studio servers for full privacy and sovereign offline translation.
- LibreTranslate (Open source): Connect your private self-hosted instances (native local/LAN HTTP and remote HTTPS support without an SSL proxy, extended 60s timeout).
Privacy and Performance First
- Zero trackers, zero analytics, no advertisements.
- Direct HTTPS connections from your device to the selected provider (or 100% local and offline with Ollama and LM Studio).
- Complete UI isolation using Shadow DOM to keep email layouts intact.
Effortless Workflow
- Click the dedicated Translate button in the message or compose header (or press
Alt+Shift+T). - Click the active engine badge for quick access to preferences and engine settings.
