Add-ons
Chat and IM
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AutoarchiveReloaded
Automatically archives old mails (Improved version of the orginal Autoarchive Add-on)
22,382 users
Most Popular See all »
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Automatically archives old mails (Improved version of the orginal Autoarchive Add-on)22,382 users -
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!8,779 users -
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)4,409 users -
Open Google Chat in a Thunderbird Tab.
Update: 3 Dec 2024 -
Literally all this extension does is to open Google Chat in a separate tab. Thank you for all your kind comments! I made this to scratch an itch and I'm glad it has helped so many :)1,697 users
Top Rated See all »
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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!8,779 users -
Chat notification for Mozilla Thunderbird. Notification with alert (click on alert open conversation) and sound.1 user -
This extension serves the purpose of providing instant access to the FOAAS web service. FOAAS (Fuck Off As A Service) provides a modern, RESTful, scalable solution to the common problem of telling people to fuck off.3 users -
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)4,409 users
Recently Added See all »
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Unofficial Whatsapp Web add-on for Thunderbird, it adds a button in Spaces that opens a WhatsApp Web tab in Thunderbird.0 users -
Unofficial Google Chat add-on for Thunderbird, it adds a button in Spaces that opens a Google Chat tab in Thunderbird.0 users -
Unofficial Google Messages add-on for Thunderbird, it adds a button in Spaces that opens a Google Messages tab in Thunderbird.0 users -
Delete all conversations from ChatGPT, Claude, Grok, Gemini, Perplexity, and DeepSeek1 user -
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.16 users -
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)13 users
See all 59 extensions in Chat and IM »
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