Message Composition

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RM: EXTERNAL:

Removes 'EXTERNAL: ' from the start of an email subject if it is preceded by 'RE:' or 'FWD:' (case insensitive). The removal is done after the 'Send' button is pressed.

Not yet rated
0 users
Added January 28, 2016

Check Attachment before Send

Confirms to send a mail with any attachment.

Not yet rated
1 user
Added December 16, 2015

BccBlocker

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
2 users
Added November 14, 2015

MEGAbird

Add MEGA support to Thunderbird's Filelink feature.

Not yet rated
53 users
Added November 11, 2015

ThunderBird Ticker

Extension for creating support tickets based on mail.

Not yet rated
4 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)
39 users
Added August 13, 2015

AFP protocol enabler No Restart

Enable afp protocol (afp://)

Not yet rated
14 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

ReplyWithHeader

Outlook style headers and few goodies for Thunderbird & Postbox.

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

gLOC for Thunderbird

gLOC - a link that lets you find your way! Once you create your own gLOCs at https://app.gloc.io, you can easily insert them into your emails in Thunderbird. You can also use gLOCs someone else shared with you. Product of Wayz Solutions GmbH Germany.

Not yet rated
3 users
Added April 17, 2015

Russian spell check

Supports also the Nighty browser! 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)
296 users
Added March 22, 2015

SendToSecondEmail

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

Rated 5 out of 5 stars (1)
34 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 (6)
5,011 users
Added February 26, 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
19 users
Added February 11, 2015

CryptoData

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)
1,562 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 4 out of 5 stars (2)
4,221 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)
15 users
Added September 26, 2014

Resubmit

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

Not yet rated
29 users
Added September 26, 2014

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
234 users
Added September 24, 2014