Message Composition

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Rage Hoye

Prevents you from sending offensive mails based on a keyword list

Not yet rated
1 user
Updated May 25, 2015

Markdown Here

Write your email in Markdown, then make it pretty.

Rated 5 out of 5 stars (14)
6,042 users
Updated May 22, 2015

Resubmit

Re-submit messages received from users to a predefined recipient(s)

Not yet rated
16 users
Updated May 18, 2015

Mail Merge Featured

Mass Mail and Personal Mail

Rated 5 out of 5 stars (133)
45,067 users
Updated May 7, 2015

Path Linker

メール本文中のファイルパスっぽいものをリンク化して関連付けで開けるようにします

Not yet rated
2 users
Updated April 13, 2015

MultiLDAP2

Based on TrustedBird/MiliMail work. Patched to work with lastest Thunderbird.
Permits to use several LDAP directories simultaneously for address autocompletion.

Not yet rated
48 users
Updated April 12, 2015

CategoryManager

Category manager for CardDav contacts, also allows to send an email to all members of a category.

Rated 5 out of 5 stars (5)
643 users
Updated April 11, 2015

AVIM

An input method editor (IME) for Vietnamese. Type Vietnamese diacritics directly into any Web page, Web app, or dialog box.
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Bộ gõ tiếng Việt cho phép đặt dấu trực tiếp vào bất kỳ trang Web, ứng dụng Web, và hộp thoại.

Rated 5 out of 5 stars (30)
2,861 users
Updated April 4, 2015

Russian Spelling Dictionary

Select a text in Russian appearing on any web page and get a spelling check for it immediately!

Rated 5 out of 5 stars (3)
47 users
Updated March 26, 2015

Automatic Dictionary No Restart

Extension that remembers the language of the spellchecker used when composing and switches to it every time you write to that person.

Rated 5 out of 5 stars (18)
2,377 users
Updated March 24, 2015

Send Later

True "Send Later" functionality to schedule the time for sending an email.

Rated 5 out of 5 stars (33)
51,460 users
Updated March 19, 2015

SendToSecondEmail

This Extension lets you send Mails to both, first and second email address...

Not yet rated
11 users
Updated March 7, 2015

Extra Format Buttons

Adds a font size (in pixels), strikethough, subscript and superscript buttons to Thunderbird's Compose Window.

Rated 5 out of 5 stars (2)
830 users
Updated February 26, 2015

Kmaleon Extension

Con esta extensión podrás hacer una copia de tus emails en el programa kmaleon.

Not yet rated
37 users
Updated January 27, 2015

CryptoData

Easily and quickly to encrypt / decrypt
For users: private messages via e-mail, blogs, social networks, forums, etc.
For webmasters: websites, images, photos, etc.
Support: Firefox, Thunderbird and SeaMonkey

Rated 5 out of 5 stars (4)
1,034 users
Updated January 13, 2015

ThunderPEC

ThunderPEC semplifica la gestione della Posta Elettronica Certificata (PEC) in Thunderbird.

Rated 4 out of 5 stars (6)
11,521 users
Updated December 22, 2014

CodeHighlight

highlight code in email.

Rated 3 out of 5 stars (1)
43 users
Updated December 10, 2014

Clippings

Save frequently-entered text for pasting later.

Rated 4 out of 5 stars (159)
30,951 users
Updated December 10, 2014

Transliterator No Restart

As-you-type phonetic conversion of text from one alphabet to another, as well as transliteration/detransliteration of selected text anywhere within documents. Supports multiple languages and custom transliteration schemes.

Rated 5 out of 5 stars (75)
7,257 users
Updated December 9, 2014

Synnefo for Filelink

Add Synnefo support to Thunderbird's Filelink feature.

Not yet rated
3 users
Updated December 7, 2014