Add-ons
Recently Updated Extensions
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G App Launcher (Google™ Shortcuts)
G App Launcher helps optimize your workflow by letting you open your most commonly-used websites from the browser toolbar. It opens shortcuts in a new tab so you can stay productive your own way.
WashiBird
A cozy, paper-like theme (Light/Dark). Built as an extension to allow deeper UI customization than standard themes support.
Undo Send Queue
Gmail-style Undo Send for Thunderbird — delay outgoing mail 5–60 seconds and cancel before it goes out .
configurable delay, undo from notification/queue, dark mode, no network, no telemetry
Black Menu for Google™
MinIO Filelink
Isabelle markup expander
Parse Isabelle escape codes and replace them by unicode representation
KIM Attachment Search
Sucht in KIM-Anhängen (XML/PDF/DOCX) und zeigt Meta-Daten
Set FROM: from TO:
Automatically sets the From address to the address the original email was sent to, for catch-all mailboxes.
Table Border
Define automaticamente border=1, cellpadding=3 e cellspacing=0 na tabela HTML onde o cursor está posicionado, direto na barra de formatação da janela de composição.
Mail Translator
一键翻译邮件全文，支持本地 OpenAI 兼容大模型接口如ollama、llama.cpp等。
Translate entire email content with one click, supporting local OpenAI-compatible large model interfaces such as Ollama, llama.cpp, etc.
Odoo Address Book Sync
Two-way sync between a Thunderbird address book and Odoo contacts.
ThunderJira
A Thunderbird addon that integrates Jira directly into the email client. Supports Jira Cloud (atlassian.net) and Jira Server / Data Center (self-hosted).
quickFilters
Quickly generate mail filters on the fly, by dragging and dropping mails and analyzing their attributes. Create a filter in less than 10 seconds, it's as easy as: drag, click, click.
By popular demand, supports SORTING filters alphabetically.
Quick Steps
Thunderbird add-on to create one-click Quick Steps that perform multiple email actions in sequence, such as moving, copying, deleting, and archiving messages.
Thunderpen
A TinyMCE-powered rich text editor for Thunderbird — replaces the built-in compose editor and adds a dedicated signature editor. Includes tables, format painter, multilingual UI. Fully self-hosted, no CDN dependency, no telemetry. Requires TB 115+.
Send As Alias
Automatically set From address to match email aliases when replying, with optional alias suggestion and identity creation (after one time setup)
PixelGuard
Detect tracking pixels, tracking links, and external images in Thunderbird emails.
CardBook
Featured
A new Thunderbird address book based on the CardDAV and vCard standards.
Twitter: @CardBookAddon
NC Connector for Thunderbird
NC Connector brings Nextcloud Talk meetings, secure file shares, intelligent attachment automation, and centrally managed email signatures directly into Thunderbird.
AitoMail for Thunderbird
AitoMail for Thunderbird brings the power of local AI models directly into your email client. Select any email and instantly get a concise summary or a professionally drafted reply - all without sending your data to the cloud.
To create your own collections, you must have a Mozilla Add-ons account.
