Privacy and Security

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DKIM Verifier

Verifies the DKIM-Signature of an e-mail.

Rated 5 out of 5 stars (7)
948 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
22 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 (2)
1,635 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)
70 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 (9)
419 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 4 out of 5 stars (6)
1,180 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 (11)
1,813 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)
348 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)
23 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.

Rated 5 out of 5 stars (190)
630,184 users
Added September 8, 2012

WebPG for Mozilla

An extension which provides GnuPG/GPG/PGP related functions to Moizilla Firefox, Thunderbird and Seamonkey

Rated 3 out of 5 stars (18)
3,661 users
Added September 4, 2012

TorBirdy

This extension configures Thunderbird to make connections over the Tor anonymity network.

Rated 5 out of 5 stars (4)
1,774 users
Added July 5, 2012

BorderColors GT

How many time you sent an email from your wrong email address?
This add-ons allows you assign a different color to the compose window border for each of your email addresses. So you can immediately view from what account are you writing.

Rated 4 out of 5 stars (5)
3,231 users
Added July 2, 2012

Check Domain

This extension is to display the warning dialog when you send mail for multiple domains.

Rated 4 out of 5 stars (3)
1,442 users
Added June 12, 2012

Spoof Detector

Extension for Email Spoofing Detection

Rated 2 out of 5 stars (1)
82 users
Added May 9, 2012

Email Security Plus

An Email Security add-on for Mozilla Thunderbird. Simple, fast and effective.

Rated 4 out of 5 stars (6)
1,323 users
Added May 4, 2012

Copy Folder

The missing Thunderbird "copy folder" feature! Copy folders or entire POP/IMAP accounts recursively to any location while maintaining folder structure.

Rated 3 out of 5 stars (18)
7,096 users
Added February 12, 2012

Batch Copy

Batch Copy creates a local copy of your IMAP account, copies all messages and maintains folder structure. Batch Copy can run incrementally to copy only new messages.

Rated 4 out of 5 stars (7)
1,331 users
Added February 6, 2012

abusix Spam reporter

The abusix Spam Reporter enables you to forward and report spam to the abusix blackhole.mx systems directly from Thunderbird (free of charge). Thus, you help professionals and security vendors to fight spam much more effectively at the source.

Rated 4 out of 5 stars (6)
553 users
Added January 25, 2012

Soapy

Bypasses DNS-based censorship

NOTE: This was created as a SOPA protest in 2012. This does not work anymore for most sites. Use Tor instead.

Not yet rated
170 users
Added January 4, 2012