Privacy and Security

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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 4 out of 5 stars (17)
2,400 users
Updated June 26, 2016

AdNauseam No Restart

Fight back against advertising surveillance

Rated 5 out of 5 stars (3)
4,785 users
Updated June 25, 2016

MailHops

MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.

Rated 4 out of 5 stars (25)
3,358 users
Updated June 25, 2016

B-Trust Tool NEW No Restart

Configures B-Trust security devices, imports B-Trust certification chain.

Not yet rated
603 users
Updated June 22, 2016

Stop All Ads No Restart

GO ADS FREE NOW!
Browse Safely. Optimize Surfing

Not yet rated
99 users
Updated June 21, 2016

Website Blocker

Just for now - get also a PRO version for FREE!

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 (9)
9,470 users
Updated June 17, 2016

No Resource URI Leak No Restart

Deny resource:// access to Web content: We fill the hole to defend against fingerprinting. Very important to Firefox privacy. A direct workaround for bugzil.la/863246

Rated 5 out of 5 stars (11)
2,985 users
Updated June 17, 2016

Blend In

Blends in OS-related values in User-Agent HTTP request header & a number of JS properties, so that Firefox (Thunderbird) appears to sites visited as running on the OS being used the most in the world. Thunderbird can also be blended in as Firefox.

Rated 4 out of 5 stars (10)
1,048 users
Updated June 15, 2016

DKIM Verifier

Verifies the DKIM-Signature of an e-mail.

Rated 4 out of 5 stars (12)
3,631 users
Updated June 12, 2016

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 (8)
552 users
Updated June 8, 2016

Enigmail Featured

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

Rated 4 out of 5 stars (190)
157,787 users
Updated June 4, 2016

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)
463 users
Updated June 4, 2016

TOrPeDO - TOoltip-poweRed Phishing Email DetectiOn

TOrPeDO ist ein Tool zum Erkennen von betrügerischen Links (Phishing). Bewegen Sie die Maus über einen Link in einer Email. TOrPeDO zeigt Ihnen die tatsächliche Webadresse in einem Tooltip an und hilft Ihnen, diese zu untersuchen.

Rated 3 out of 5 stars (2)
47 users
Updated May 31, 2016

EuropeanMX Spam Reporter

Train your EuropeanMX filter by reporting unrecognized spam or false-positives back to us.

Not yet rated
9 users
Updated May 26, 2016

InfoNotary Configurator for Mozilla

Configures Mozilla for work with certificates issued by InfoNotary Plc.

Rated 5 out of 5 stars (2)
9,488 users
Updated May 17, 2016

Password Tags

Adds metadata and sortable tags to the password manager.

Rated 5 out of 5 stars (7)
2,879 users
Updated May 10, 2016

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!

Rated 1 out of 5 stars (1)
455 users
Updated May 4, 2016

Customizations for Adblock Plus No Restart

This extension provides various customization options for the Adblock Plus user interface.

Rated 5 out of 5 stars (12)
16,407 users
Updated May 3, 2016

CookieKeeper No Restart

Extended Cookie Manager - Keep only wanted cookies.

Rated 4 out of 5 stars (58)
15,853 users
Updated May 1, 2016

DL for Thunderbird

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

Rated 5 out of 5 stars (3)
1,617 users
Updated April 30, 2016