Add-ons
Chat and IM
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NC Connector for Thunderbird
NC Connector brings Nextcloud Talk meetings, secure file shares, intelligent attachment automation, and centrally managed email signatures directly into Thunderbird.
SpamShield - Antispam
Detección en tiempo real de spam y phishing en Zimbra. Bloquea enlaces peligrosos con Safe Browsing, PhishTank y URLhaus.
WhatsApp Web Spaces Tab
Unofficial Whatsapp Web add-on for Thunderbird, it adds a button in Spaces that opens a WhatsApp Web tab and a contextual menu entry when when selecting a phone number.
Google Messages Spaces Tab
Unofficial Google Messages add-on for Thunderbird, it adds a button in Spaces that opens a Google Messages tab, and an entry on a contextual menu where a selected text can be sent to a chat in Google Messages.
Slack Spaces Tab
Unofficial Slack add-on for Thunderbird, it adds a button in Spaces that opens a Google Chat tab in Thunderbird, and shared copied text to Slack within Thunderbird
Google Chat Spaces Tab
Unofficial Google Chat add-on for Thunderbird, it adds a button in Spaces that opens a Google Chat tab in Thunderbird.
mleak - mail metadata osint
mleak is a Thunderbird extension for per-mail osint header and body analysis. MUA fingerprints, server stack, M365 tenant data,relay path, auth verdicts and integrity signals.
100 % offline. No network access, no telemetry, no external dependencies.
Free Email Scrapper
Streamline your data collection with a free Email Extractor. Extract emails from any webpage automatically.
LLM Chat Cleaner
Delete all conversations from ChatGPT, Claude, Grok, Gemini, Perplexity, and DeepSeek
Simple Mail Redirection
Allows you to resend (also known as redirect) email messages.
Uses 'cardbook' if installed
Bases on the add-on 'Mail Redirect' by Onno Ekker and Pawel Krzesniak
Please see the support page on how to use and why it sometimes does not work!
AI Mail Refiner | Gemini
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)
Delete Facebook Messages
A lightweight and powerful browser extension that allows you to archive or delete facebook messages.
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)
Quill
Quill lets you integrate AI writing assistance (Ollama, OpenAI, or Claude) to help you write or respond to emails un Mozilla Thunderbird.
Zoom Meetings for Thunderbird
Create and start Zoom meetings directly from Thunderbird.
Supports:
1.Zoom OAuth
2. SSO/SAML login with auto-detected IdP.
AutoarchiveReloaded
Featured
Automatically archives old mails (Improved version of the orginal Autoarchive Add-on)
ShowThread
Highlights messages which belongs to the thread of the selected message
Quick Spaces
Makes it possible to add custom addresses to the spaces toolbar
Apilo
Shows order information assosciated with sender's email address.
MailNotes – Team Up
Write notes or remarks on any email to capture ideas, provide feedback, or attach useful information like links, reminders, or to-dos. Perfect for drafting, editing, and organizing email communication collaboratively.
To create your own collections, you must have a Mozilla Add-ons account.
