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AutoBucket

This is an extension function that classifies emails into multiple buckets using AI(the Bayesian filter) and tags them.

Rated 3 out of 5 stars (15)
135 users

AI Email Assistant

Automatically generate email responses using AI through an external API integration. This add-on sends emails to an API and inserts the AI-generated response into your reply.

Rated 3 out of 5 stars (2)
315 users

PhishGuard

AI-powered email phishing detection using a private, local LLM. No data leaves your device.

Supported Local LLM Providers:
- Ollama
- LM Studio
- llama.cpp server
- vLLM
- etc.

Not yet rated
14 users

InboxAI

AI-powered email assistant for Thunderbird. Write, polish, and translate emails. Get smart summaries of unread messages. Works with OpenAI, DeepSeek, or custom providers.

Not yet rated
23 users

Sortana

Sortana adds AI-powered email filtering to Thunderbird. Configure your own endpoint and tailor prompts to automatically classify messages. Tune generation settings, cache results across restarts, and debug with colorized logs.

Not yet rated
27 users

ThunderAI Sparks

ThunderAI Sparks is an add-on designed to add advanced features to ThunderAI.

Not yet rated
919 users

Hawk (Like ChatGPT in your emails)

Hawk for Thunderbird is an AI-powered plugin designed to generate clear and personalized emails, translate content, fix grammar errors, and streamline your email communication workflow.

Rated 5 out of 5 stars (3)
631 users

Quill

Quill lets you integrate AI writing assistance (Ollama, OpenAI, or Claude) to help you write or respond to emails un Mozilla Thunderbird.

Rated 1 out of 5 stars (1)
12 users

AI Mail Support

Add-on designed to enhance email management for both personal and professional use, integrating a set of adanced AI (LLM) features to optimize the email management experience.

Rated 5 out of 5 stars (2)
660 users

AI Mate

Provides a compose button in Thunderbird that creates AI-powered email replies with OpenAI. Offers settings for API key, model choice, and customization options.

Not yet rated
115 users

Visual email editor. Ai

Professional drag-and-drop email editor for Thunderbird. Create responsive HTML emails with MJML. Features AI integration (Groq) for generating emails. No coding required. One-click export to compose.

Not yet rated
34 users

Gemini Mail Review – AI Mail Check for Thunderbird

Review your emails with AI before sending in Thunderbird.
Gemini Mail Review uses Google Gemini to check tone, clarity, grammar, and common email mistakes and improve writing.

送信前にAIでメールをレビュー。
Google Geminiで文法・トーン・明瞭さ・メールの問題点を Thunderbird 上でチェック

Not yet rated
116 users

BestReply

BestReply is an add-on that aims to improve users’ experience by providing quick services to the user such as summarization of emails, response generations, as well as a smart chat with our AI model based on the email they are reading.

Rated 3 out of 5 stars (1)
21 users

AI Anywhere for ChatGPT

Press "Alt + i" or use context menu to quickly access:
- ChatGPT (OpenAI)
- GitHub Copilot (Microsoft)
- Claude (Anthropic)
- T3 Chat
- Lumo (Proton)
- Gemini (Google)
- Grok (X)
- Mistral
- Perplexity
- DeepSeek (深度求索)

Rated 4 out of 5 stars (17)
4,649 users

Aify

Rewrite or generate text based on promps using OpenAI's API.

Configure on settings page (make sure to save) and start to use when writing your emails!

You must have a payment method on record with OpenAI and an API key. OpenAI charge for use.

Rated 5 out of 5 stars (10)
415 users

ReplyAgent

AI email replies for Thunderbird.

Rated 5 out of 5 stars (2)
70 users

ThunderAI (ChatGPT, Gemini, Claude, Ollama)

ThunderAI uses the capabilities of ChatGPT, Google Gemini, Claude or Ollama to enhance email management.
It enables users to analyze, write, correct, assign tags, create calendar events and tasks and optimize their emails.

Rated 5 out of 5 stars (24)
11,673 users