Message Composition



A ThunderBird extension to prevent the use of the Bcc field.

Bcc is the worst thing ever.
It kills transparency inside an organization.
If you use the Bcc feature, you should ask yourself why..

Not yet rated
1 user
Added November 14, 2015

ThunderBird Ticker

Extension for creating support tickets based on mail.

Not yet rated
7 users
Added September 10, 2015

Sensitivity Header

Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
This allows the user to select Private / Personal / Company-Confidential (or none) for an outgoing message.

Rated 4 out of 5 stars (1)
28 users
Added August 13, 2015

AFP protocol enabler No Restart

Enable afp protocol (afp://)

Not yet rated
13 users
Added August 4, 2015

QFO - Quick Fuck Off

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 (2)
42 users
Added June 5, 2015

Rage Hoye

Prevents you from sending offensive mails based on a keyword list

Not yet rated
1 user
Added May 25, 2015


Outlook style headers and few goodies for Thunderbird & Postbox.

Rated 5 out of 5 stars (3)
115 users
Added April 20, 2015

gLOC for Thunderbird

gLOC - a link that lets you find your way! Once you create your own gLOCs at, you can easily insert them into your emails in Thunderbird. You can also use gLOCs someone else shared with you.

Not yet rated
3 users
Added April 17, 2015

Russian spell check

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

Rated 4 out of 5 stars (4)
163 users
Added March 22, 2015


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

Rated 5 out of 5 stars (1)
32 users
Added 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 (5)
5,254 users
Added February 26, 2015

Path Linker


Not yet rated
19 users
Added February 11, 2015


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

New feature: CryptoPad (crypto-notepad)

Rated 5 out of 5 stars (6)
1,555 users
Added January 2, 2015

Email signature for Thunderbird - WiseStamp

Switch Thunderbird email signatures. Supports Gmail, Yahoo, AOL & Outlook webmails. Youtube, Facebook, Twitter icons & more

Rated 3 out of 5 stars (1)
4,412 users
Added October 5, 2014

Single Domain

Warns if you send mail from or to a specified domain. If there are multiple accounts in your profile, you can isolate one so that you can't send mail to that domain from outside or vis versa without warning.

Rated 5 out of 5 stars (1)
14 users
Added September 26, 2014


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

Not yet rated
27 users
Added September 26, 2014


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

Not yet rated
215 users
Added September 24, 2014

Emoji Menu

Adds the ability to easily insert emojis into your composed messages in Thunderbird.

Rated 4 out of 5 stars (1)
2,661 users
Added September 14, 2014

Synnefo for Filelink

Add Synnefo support to Thunderbird's Filelink feature.

Not yet rated
7 users
Added September 10, 2014

Consigna para Filelink

Plugin para subir ficheros a Consigna (Junta de Andalucía) de forma automática desde Thunderbird.
Está ideado para el intercambio de ficheros de gran tamaño. Es un espacio de almacenamiento temporal y con algunas restricciones de acceso opcionales.

Rated 5 out of 5 stars (1)
768 users
Added July 16, 2014