アドオン
メール作成／編集
SubSwitch
Simplify email categorization - it will be easier for you and others to manage mail. Define the set of prefixes for all emails you send or let SubSwitch to autodiscover it. While writing insert prefix to the title - choose one from your set.
FlexConfirmMail
柔軟なルールに基づいて、宛先のメールアドレスや添付ファイルに対する確認を表示する事ができます。
（ブランディングの都合により、このプロジェクトは「Flex Confirm Mail」（スペースあり）から「FlexConfirmMail」（スペース無し）に名称変更されました。）
StandardTexter
With the help of this Add-on, up to 99 pre-made texts (standard texts, text modules or even signatures) can be stored, which can then be retrieved and inserted when writing an e-mail.
The texts can be preformatted with HTML.
ReplyWithHeader
コピーアドレス
HTML Source Editor
Allows to edit the source of the currently composed message. A simple alternative to ThunderHTMLedit.
Shrunked Image Resizer
Make your photos smaller, so they don't take forever to email.
*Shrunked Image Resizer is no longer maintained.*
Grammar and Spell Checker — LanguageTool
Check your emails for spelling and grammar issues
Textmarker
Highlights selected text when composing emails. Default colour is yellow - other colours are available via Options.
(Works only during writing an e-mail, i.e. only in the compose window.)
Simple Mail Redirection
Markdown Here
changeQuote
これは、返信ヘッダーの形式を変更する拡張機能です。 標準のThunderbird返信ヘッダー、詳細な返信ヘッダー、またはカスタマイズされた返信ヘッダーから選択できます。 [ツール]-> [アドオン設定]-> [changeQuote]で構成できます。
FileLink Provider for Dropbox
Uploads your large attachments to your Dropbox instead of sending them by email. This uses Thunderbird's FileLink feature.
Clippings for Thunderbird
Identity Chooser
Identity Chooser helps you to always use the correct identity when composing a new email.
CategoryManager
Category manager for Thunderbird contacts, also allows to send an email to all members of a category (categories can be used as contact groups).
SmartTemplate4
✨ Awesome Emoji Picker ✨
Modern, nice emoji picker that you can use to find and select emojis. It will be copied to your clipboard or even directly inserted into the e-mail, when you click on it.
You will certainly like it.
自分のコレクションを作成するには Mozilla アドオンサイトのアカウントが必要です。
あるいは 既存のアカウントへログイン
