アドオン

Provider for Google Calendar 作者: Philipp Kewisch

Provider for Google Calendar connects Thunderbird with Google Calendar for full task sync, conference details, and scheduling support. It offers deeper integration than Thunderbird’s native support using Google’s official API.

Enigmail 作者: Patrick Brunschwig

OpenPGP メッセージの暗号化および認証機能を提供する Thunerbird 向けアドオンです。

Mail Merge 作者: Alexander Bergmann

Create and Save or Send Multiple Individual and Personalized Messages from a Draft

LookOut 作者: Aron Rubin

LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).

Remove Duplicate Messages 作者: Eyal Rozenberg

Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).

Mail Redirect 作者: Onno Ekker, Pawel Krzesniak

他の受信者にメール メッセージをリダイレクト（または"バウンス(remail)"）することを可能にします。

コレクターのメモ 日本語改造版。http://www.geocities.jp/chimantaea_mirabilis/mailredirect/index.html

CompactHeader 作者: jmozmoz

Add symbol in header plane to switch between compact and expanded view. Work only for Thunderbird 68.0 and older. Currently, there are no plans to update this for newer versions.

コレクターのメモ Thunderbird 3 用のメッセージヘッダの表示をカスタマイズするアドオン。

QuickFolders (Tabbed Folders) 作者: Realraven (Axel Grude), Alexander Malfait

The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.

See new mail at a glance after automatic filtering - supports quickFilters addon!

Stationery 作者: Arivald

Extension to mimic Outlook Express Stationery.
Allow you to use HTML files as templates for mail. Also allow custom template in replies or forwarded mail!

コレクターのメモ メッセージのひな形管理。

Walnut2 for Thunderbird 作者: alfredkayser

Walnut2 for Thunderbird, based on icons from art.gnome.org. Walnut2 is based on Walnut but with better looking wood panels.
Supports Thunderbird versions 53.0 to 60.0. From version 61.0, Thunderbird will drop support for full custom themes.

コレクターのメモ 木目調のテーマ。

Google Contacts 作者: H.Ogi

Thunderbirdのアドレス帳とGoogleの連絡先を同期させ、アドレス帳から、Googleの連絡先を参照、変更できるようにします。

Allow HTML Temp 作者: Alexander Ihrig

Allows to have HTML temporarily enabled (and displayed) in the currently selected message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (according to your settings).

Quote Colors 作者: Malte Ruecker

Quote Colors は、メッセージの表示時や印刷時、引用文のテキスト色と背景色を階層ごとに選択できます。さらに、引用文の表示モードをグラフィカルな表示と従来のプレーンテキスト表示のどちらかに切り替えられます。

Provider for Microsoft Exchange 作者: Simon Schubert

The lightning-exchange-provider addon allows you to use Microsoft Exchange calendars in Thunderbird, via Exchange’s web services.

This addon only works with Microsoft Exchange 2007 and above. Exchange 2003 is not supported.

Nostalgy 作者: Alain Frisch

Keyboard shortcuts to change folder, move/copy messages, with folder name auto-completion.

コレクターのメモ キーボードショートカットでメッセージ操作できる。