Add-ons
Chat and IM
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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
SpamShield - Antispam
Detección en tiempo real de spam y phishing en Zimbra. Bloquea enlaces peligrosos con Safe Browsing, PhishTank y URLhaus.
Free Email Scrapper
Streamline your data collection with a free Email Extractor. Extract emails from any webpage automatically.
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 Chat Spaces Tab
Unofficial Google Chat add-on for Thunderbird, it adds a button in Spaces that opens a Google Chat tab in Thunderbird.
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.
LLM Chat Cleaner
Delete all conversations from ChatGPT, Claude, Grok, Gemini, Perplexity, and DeepSeek
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.
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.
Zoom Meetings for Thunderbird
Create and start Zoom meetings directly from Thunderbird.
Supports:
1.Zoom OAuth
2. SSO/SAML login with auto-detected IdP.
Quill
Quill lets you integrate AI writing assistance (Ollama, OpenAI, or Claude) to help you write or respond to emails un Mozilla Thunderbird.
NC Connector for Thunderbird
NC Connector brings Nextcloud Talk meetings, secure file shares, intelligent attachment automation, and centrally managed email signatures directly into Thunderbird.
ShowThread
Highlights messages which belongs to the thread of the selected message
Apilo
Send Selected As BCC
Wählt mehrere Nachrichten aus und öffnet eine neue Mail mit deren Absendern als BCC.
ProtonMail Tab
This Addon opens a new tab with mail.proton.me at startup if none is open.
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.
ReplyAgent
Webbuttons - Google Messages Web
Adds a button in the toolbar for Google Messages Web. Icon source: https://www.flaticon.com/free-icon/comment_9449200
To create your own collections, you must have a Mozilla Add-ons account.
