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Tech riderRev. 5 Oct 2026

AI Email Assistant for Thunderbird

Ch 186.4of 28 AI Email Writing Tools
  1. 1Runs onBrowser
  2. 2CostsFree plan
  3. 3Browser extensionNo
3 lines stated Written from the maker's own pages: github.com
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The AI Email Assistant for Thunderbird homepage

Overview

AI Email Assistant for Thunderbird is ranked #18 of 28 in AI email writing tools on Specifiction. It runs on Browser extension. There is a free plan.

AI Email Assistant for Thunderbird plans and pricing

All plans
AI Email Assistant for Thunderbird Free Bring your own API key; AI provider usage may cost extra github.com · 5 Oct 2026

Compared on AI email writing tools

Free plan
Yesgithub.com
Browser extension
Nogithub.com

Facts

Purpose
A free, open-source Thunderbird extension that adds AI to the email compose window.github.com · 5 Oct 2026
Writing tools
It can rewrite selected text, draft a complete email from a description, and suggest three subject lines.github.com · 5 Oct 2026
Translation
It translates emails into Polish, English, German, French, Spanish, Ukrainian, and Russian.github.com · 5 Oct 2026
AI integrations
Supported providers are Google Gemini, Groq, OpenAI, Anthropic Claude, xAI Grok, OpenRouter, and Ollama.github.com · 5 Oct 2026
Local option
Ollama runs locally and is described as 100% free, for complete privacy.github.com · 5 Oct 2026
Refinement and access
Users can refine generated text with a comment and access AI actions through the right-click menu or Ctrl+Shift+Space.github.com · 5 Oct 2026
History and styles
The extension stores the last 50 operations locally and allows users to add unlimited custom writing styles.github.com · 5 Oct 2026
Privacy
The maker says there is no telemetry, analytics, or tracking, and emails are sent only to the AI provider the user chooses.github.com · 5 Oct 2026
Key storage
API keys are stored locally and can optionally be encrypted with AES-256-GCM; history is stored locally and never synced to external servers.github.com · 5 Oct 2026
License
The project uses the MIT License and is free for personal and commercial use.github.com · 5 Oct 2026
Installation
The maker provides a downloadable .xpi file and installation instructions for Thunderbird's Add-ons and Themes menu.github.com · 5 Oct 2026
Support and contributions
The maker invites bug reports through GitHub Issues and feature ideas through Discussions, and welcomes pull requests.github.com · 5 Oct 2026

Best AI Email Assistant for Thunderbird alternatives

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All accessCh 01 WriteMail.ai Free planAndroidBrowser from $5/mo7.7 All accessCh 02 Ellie Free planFree trialBrowser from $19/mo7.5 All accessCh 03 ForthWrite Free planFree trialAPI from $24/mo7.5 All accessCh 04 WPS AI Email Writer Free planAndroidiOS Free to start7.5 All accessCh 05 AI Perfect Assistant Free planAndroidBrowser from $16.99/mo7.4 All accessCh 06 Lavender Free planFree trialBrowser from $27/mo7.4

Where it ranks on Specifiction

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Sources