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Nightly Tester Tools Requires Restart

Useful tools for the nightly tester.

Rated 4 out of 5 stars (194)
42,565 users

Check Domain Requires Restart

This extension is to display the warning dialog when you send mail for multiple domains.

Rated 4 out of 5 stars (5)
2,822 users

Address Move Button Requires Restart

Allow you to add a Address Move Button to mail compose window.

Not yet rated
4,584 users

No application/applefile Requires Restart

Prevents storing of the MIME Type "application/applefile".

Rated 5 out of 5 stars (2)
1,041 users

Address bulk copy (アドレス一括コピー) Requires Restart

Thunderbird は Outlook のようにアドレス全選択からの「一括コピー」ができません。
それを実現するためのアドオンです。

Rated 5 out of 5 stars (2)
2,213 users

Multi-LDAP Requires Restart

Permits to use several LDAP directories simultaneously for address autocompletion.

Rated 4 out of 5 stars (14)
1,202 users

Custom Address Sidebar Requires Restart

Allow you to help address sidebar more useful.

Rated 4 out of 5 stars (7)
5,546 users

ALL To CC BCC Requires Restart

送信先アドレスのすべてをTo、CC、BCCに変更するボタンです。
メール作成画面の、件名の下に追加されます。

Rated 4 out of 5 stars (1)
1,154 users

MarkSubfolders New Requires Restart

Mark all read for Subfolders

It's the same like MarkSubfolders but it's compatible with Firefox 4 and later.

Rated 5 out of 5 stars (2)
1,179 users

Address Close Button Requires Restart

Adds a Address Close Button to mail compose window.

Rated 5 out of 5 stars (25)
14,910 users

bulkPaste_recipient Requires Restart

May be send an email to have your work routine.
Mail Settings (To / Cc / Bcc / Return / Subject) etc.

This extension is by creating a simple formatting, you can complete the address written in two steps

Rated 4 out of 5 stars (2)
1,314 users

Confirm-Address Requires Restart

Confirm E-mail address before sending mail

Rated 4 out of 5 stars (33)
55,326 users

confirm-mail Requires Restart

メール送信前に宛先メールアドレスと添付ファイル名を確認することができるアドオンです。

Rated 3 out of 5 stars (5)
2,826 users

Flex Confirm Mail Requires Restart

Confirm mail address and attachments based on flexible rules.

Rated 1 out of 5 stars (1)
10,690 users

Join-NG Requires Restart

Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".

Rated 5 out of 5 stars (4)
2,737 users

Secure Addressing Requires Restart

This add-on provides features to avoid sending emails to wrong addresses. Key features are a confirmation window of recipient's addresses upon sending, name and affiliation look up at mail composition and main windows, and safe auto completion.

Rated 5 out of 5 stars (19)
2,957 users

Force Addon Status Requires Restart

Provides ability to change status of specific addon (enabled/disabled).

Not yet rated
1,233 users

AdNauseam

Fight back against advertising surveillance

Rated 4 out of 5 stars (12)
7,667 users

Auto Address Cleaner Requires Restart

Removes comment, display name automatically from addresses before sending mail.

Rated 4 out of 5 stars (51)
18,066 users

Ruler Bar Requires Restart

This appends a ruler to the mail composition window.

Rated 4 out of 5 stars (8)
2,540 users