Message Composition

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CryptoData Requires Restart

Easily and quickly to encrypt / decrypt:
Private messages via e-mail, blogs, social networks, forums, websites, images, etc
Support: Firefox, Thunderbird and SeaMonkey

Rated 5 out of 5 stars (7)
1,763 users
Updated September 3, 2016

QFO - Quick Fuck Off Requires Restart

This extension serves the purpose of providing instant access to the FOAAS web service. FOAAS (Fuck Off As A Service) provides a modern, RESTful, scalable solution to the common problem of telling people to fuck off.

Rated 3 out of 5 stars (3)
81 users
Updated August 25, 2016

Send Later Requires Restart

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

Rated 5 out of 5 stars (77)
70,285 users
Updated August 22, 2016

SendToSecondEmail Requires Restart

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

Rated 5 out of 5 stars (1)
44 users
Updated August 19, 2016

CategoryManager 2 Requires Restart

Category manager for Thunderbird contacts, also allows to send an email to all members of a category (categories can be used as contact groups).

Rated 5 out of 5 stars (10)
2,852 users
Updated August 12, 2016

AVIM Requires Restart

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

Rated 5 out of 5 stars (33)
3,320 users
Updated August 1, 2016

Clippings Requires Restart

Save frequently-entered text for pasting later.

Rated 4 out of 5 stars (186)
37,568 users
Updated August 1, 2016

Mail Merge Requires Restart Featured

Mass Mail and Personal Mail

Rated 5 out of 5 stars (142)
61,922 users
Updated July 25, 2016

MultiTemplateLoader Requires Restart

Manages & applies multiple HTML templates when creating/replying messages.

Templates may be either local files or online links (http:// or ftp://). Up to 9 templates can be defined and easily switched, also using shortcut keys.

Not yet rated
54 users
Updated July 23, 2016

Identity Checker Requires Restart

This add-on checks to sender identity when send a message.

Not yet rated
24 users
Updated July 22, 2016

Tategaki Requires Restart

Tategaki allows vertical writing-mode on mail compose window.

Not yet rated
23 users
Updated July 22, 2016

Emoji Requires Restart

Add emojis to your e-mails.

Not yet rated
1,003 users
Updated July 18, 2016

SmartTemplate4 Requires Restart

SmartTemplate4 offers an easy way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every account as well as for the default (all email accounts). Also supports the Stationery Add-on.

Rated 5 out of 5 stars (51)
22,120 users
Updated July 11, 2016

ReplyWithHeader Requires Restart

Outlook style headers and few goodies for Thunderbird & Postbox.

Rated 4 out of 5 stars (5)
780 users
Updated July 9, 2016

ThunderHTMLedit Requires Restart

Thunderbird HTML editor. This add-on adds a HTML tab to the composition window where you can see and edit the HTML source of the message.

Rated 5 out of 5 stars (1)
791 users
Updated July 5, 2016

ConferenceCall.nl templates

Voegt de handige e-mail templates toe aan de knoppenbalk van Thunderbird om deelnemers aan uw conference call uit te nodigen.

Not yet rated
3 users
Updated June 21, 2016

Telefonkonferenz.de-Vorlagen

Durch das Plug-in werden unsere praktischen E-Mail-Vorlagen Ihrer Thunderbird-Symbolleiste hinzugefügt

Not yet rated
9 users
Updated June 20, 2016

ConferenceCall.co.uk templates

This plugin adds our savvy email templates to your Thunderbird toolbar.

Not yet rated
10 users
Updated June 20, 2016

Color Text Compose Buttons Requires Restart

Adds Text Color Buttons in Compose Toolbar and More: Pixel FontSize, Strikethough, Sub & Superscript, Lower & UpperCase. Also provide Tools: Insert iframe, Launch MathType, Maths & Greek Symbols, Load Template Variables and Duplicate Compose Window.

Rated 4 out of 5 stars (20)
2,236 users
Updated June 6, 2016

DL for Thunderbird Requires Restart

Allows to convert large attachments to links automatically without 3rd party providers.

Rated 5 out of 5 stars (3)
1,875 users
Updated April 30, 2016