Privacy and Security

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Sensitivity Header + SPX

Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
Forked from another add-on developed by ff_bob, added SPX header for Sophos security appliances

Not yet rated
1 user
Added February 6, 2016

Complete master password

The goal is to avoid to have to enter the master password on application startUp.
The extension is not self-sufficient, a script has to extract the master for a secure storage like gnome-keyring, then to transfer it through an environment variable.

Not yet rated
1 user
Added December 19, 2015

Check Attachment before Send

Confirms to send a mail with any attachment.

Not yet rated
1 user
Added December 16, 2015

MEGAbird

Add MEGA support to Thunderbird's Filelink feature.

Not yet rated
71 users
Added November 11, 2015

Thunderbird-DontRestoreTabs

Allows the user not to restore tabs at startup in Thundertbird

Not yet rated
29 users
Added October 18, 2015

KDE5 Wallet password integration

This extension enable passwords and form logins to be stored in KDE5 Wallet

Rated 5 out of 5 stars (2)
215 users
Added October 7, 2015

Website Blocker

All the bugs have been fixed!
Everyone needs this add-on!
Block websites you don't want the browser to get into.
Block by a whole domain name or a specific address.
Block until further notice or until a certain date.

Rated 2 out of 5 stars (6)
10,028 users
Added October 4, 2015

Disable About Something

Provides ability to disable "about:*" pages by the configuration.

Rated 5 out of 5 stars (1)
114 users
Added September 24, 2015

GProxy Plus

GProxy Plus lets you set and clear Freegate local proxy in Firefox and Thunderbird, and do more.

Not yet rated
299 users
Added September 6, 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)
38 users
Added August 13, 2015

SecondOpinion

This extension implements a convenient way to check and upload attachments against VirusTotal.com

Rated 5 out of 5 stars (1)
82 users
Added June 19, 2015

Steganografi menggunakan PIT dan PRNG

Add-on penyisipan pesan pada gambar menggunakan PIT dan PRNG

Not yet rated
1 user
Added May 26, 2015

Force Authentication at Startup.

Always ask password and hide UI at the startup.

Not yet rated
11 users
Added March 5, 2015

clamdrib LIN

"clamdrib LIN" ist wie der Name schon sagt die Weiterentwicklung des Add-on clamdrib, allerdings nur noch für Linux. Sämtliche E-Mails, Feeds und News werden auf Viren und anderes Ungeziefer geprüft und gemeldet. Gelöscht wird hierbei jedoch nichts!

Not yet rated
368 users
Added February 25, 2015

ThunderSec

ThunderSec is a security extension that provides several pieces of additional security functionality, including DNS-based Blackhole List (DNSBL), Realtime Blackhole Lists (RBL), DomainKeys Identified Mail (DKIM) and Sender Policy Framework (SPF).

Rated 5 out of 5 stars (4)
315 users
Added February 15, 2015

pass-manager

Replace integrated password managers storage with zx2c4's pass (www.passwordstore.org)

Rated 3 out of 5 stars (1)
36 users
Added January 10, 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)
1,508 users
Added January 2, 2015

Netlux Adblocker No Restart

Block unwanted ads.

Not yet rated
89 users
Added November 20, 2014

Sender Address Columns

Adds optional columns to the Thread Pane to allow sorting email messages by:
* Sender address -- e.g. "someone@example.com"
* Sender address domain -- e.g. "example.com"
* Sender address local part -- e.g. "someone"

Rated 5 out of 5 stars (2)
107 users
Added October 27, 2014

enMailing for Thunderbird

Encrypted email made easy.

Not yet rated
4 users
Added June 14, 2014