Privacy and Security

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CookieKeeper No Restart

Extended Cookie Manager - Keep only wanted cookies.

Rated 4 out of 5 stars (61)
15,821 users
Added January 22, 2014

Secure Addressing

This add-on provides features to avoid sending emails to wrong addresses. Key features are a confirmation window of recipient's addresses upon sending, name and affiliation look up at mail composition and main windows, and safe auto completion.

Rated 5 out of 5 stars (19)
2,356 users
Added January 11, 2014

Extensor No Restart

Quick access to add-on functionality: activate / deactivate, options, details, home / review / donation pages, uninstall, restart.

Rated 5 out of 5 stars (2)
283 users
Added December 11, 2013

Bitmask Thunderbird Extension

This extension includes:

* A wizard for creating Bitmask email accounts on Thunderbird.
* Cache prevention for Bitmask accounts.

Not yet rated
249 users
Added October 31, 2013

Highlight External Addresses

This extension helps to warn the user when composing a message to a mixed group of people both in and out of the sender's organization. External addresses are highlighted in orange as a reminder.

Rated 4 out of 5 stars (1)
148 users
Added October 29, 2013

Massey Omura Cryptosystem

Add On Keamanan EMail dengan Massey Omura Cryptosystem

Not yet rated
1 user
Added August 20, 2013

Channel Guard

Channelguard disables plugins and protocol handlers to ensure maximum security against side-channel attack.

Rated 4 out of 5 stars (2)
41 users
Added August 16, 2013

DL for Thunderbird

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

Rated 5 out of 5 stars (3)
1,724 users
Added July 9, 2013

Paranoia

Check if your emails arrived TLS-encrypted (and which corporations were able to read it nevertheless)

Rated 4 out of 5 stars (6)
957 users
Added July 2, 2013

Bluhell Firewall No Restart

Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.

Rated 5 out of 5 stars (280)
121,177 users
Added May 24, 2013

DKIM Verifier

Verifies the DKIM-Signature of an e-mail.

Rated 4 out of 5 stars (12)
3,771 users
Added May 13, 2013

Enigma-code

Proste i szybkie szyfrowanie korespondencji e-mail, jak i dowolnego tekstu. Algorytm szyfrowania oparty na sposobie szyfrowania maszyny Enigma.

Not yet rated
7 users
Added April 2, 2013

Close Proxy Authentication

Provides transparent proxy authentication on your enterprise network.
Close authentication dialog if login on proxy failed.

Rated 5 out of 5 stars (3)
4,804 users
Added March 20, 2013

CapsKiller

Caps Killer is a protection against newbies using caps in their mails.

Rated 5 out of 5 stars (2)
74 users
Added February 23, 2013

GNOME keyring password integration

Extension that allows Firefox and Thunderbird to store passwords in Keyring, Gnome's default password store.

Rated 3 out of 5 stars (17)
483 users
Added January 17, 2013

Too Many Recipients

Contourne la limite du nombre de destinataires/e-mail des serveurs SMTP.
Gets around the limit on the number of recipients/e-mail of SMTP servers.
Evita la limitación de número de destinatarios/e-mail del servidor SMTP.

Rated 3 out of 5 stars (18)
1,667 users
Added December 13, 2012

Encrypt if possible

Sets message security option "encrypt message", if valid X509 certificates are found for all recipients.

Rated 5 out of 5 stars (14)
1,812 users
Added October 15, 2012

Security Settings from Address Book

Sets message security (sign/encrypt) when sending or saving messages based on recipients' address book entry's field "Custom1".

Rated 5 out of 5 stars (2)
450 users
Added October 12, 2012

Don't Send Linked Files

Prevents sending of linked files if they are file: URLs.

Rated 1 out of 5 stars (1)
20 users
Added September 11, 2012

Adblock Edge No Restart

Adblock Edge is a fork of the Adblock Plus version 2.1.2 extension for blocking advertisements on the web, without sponsored ads whitelist.

**This addon has been discontinued**

Rated 5 out of 5 stars (307)
427,441 users
Added September 8, 2012