Message Composition



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

Not yet rated
24 users
Updated October 5, 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
Updated October 2, 2015

ThunderBird Ticker

Extension for creating support tickets based on mail.

Not yet rated
1 user
Updated September 28, 2015

Kmaleon Extension

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

Not yet rated
48 users
Updated September 25, 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 (20)
2,560 users
Updated September 19, 2015

Reply to All as Cc

Send a reply for recipients as CC except the sender, when you do "Reply to All".

Rated 4 out of 5 stars (2)
196 users
Updated September 15, 2015

Mail Merge Featured

Mass Mail and Personal Mail

Rated 5 out of 5 stars (134)
50,332 users
Updated September 13, 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.

Not yet rated
15 users
Updated September 11, 2015


Category manager for CardDav 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 (6)
1,316 users
Updated September 10, 2015


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 (6)
1,276 users
Updated September 8, 2015

Markdown Here

Write your email in Markdown, then make it pretty.

Rated 5 out of 5 stars (15)
6,436 users
Updated September 7, 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)
31 users
Updated August 31, 2015


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 (49)
17,787 users
Updated August 30, 2015

RemindIt No Restart

Help in reminding mails to be answer or sent again. Choose a reminder date for each received or send message that are highlighted in the message list, depending on their status (expired, soon to exprire, to be reminded). Sending a reminder is eased.

Rated 3 out of 5 stars (16)
309 users
Updated August 27, 2015

Send Later

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

Rated 5 out of 5 stars (39)
57,364 users
Updated August 26, 2015

AFP protocol enabler No Restart

Enable afp protocol (afp://)

Not yet rated
11 users
Updated August 11, 2015


Extension to mimic Outlook Express Stationery.
Allow you to use HTML files as templates for mail. Also allow custom template in replies or forwarded mail!

Rated 4 out of 5 stars (107)
38,729 users
Updated July 9, 2015

DL for Thunderbird

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

Rated 5 out of 5 stars (3)
1,468 users
Updated July 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)
3,990 users
Updated June 28, 2015

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)
11 users
Updated June 26, 2015