Privacy and Security

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Paranoia Requires Restart

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

Rated 4 out of 5 stars (9)
1,367 users

Password Exporter

This add-on allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.

Note: This add-on won't work in Firefox 57. It may eventually if the APIs to access passwords are implemented.

Rated 4 out of 5 stars (550)
1,264 users

Bluhell Firewall

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

Rated 4 out of 5 stars (497)
1,132 users

BorderColors GT Requires Restart

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 (10)
1,072 users

TORPEDO - TOoltip-poweRed Phishing Email DetectiOn Requires Restart

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 4 out of 5 stars (4)
1,034 users

Classic Password Editor Requires Restart

Adds the ability to create and edit entries in the password manager.

Rated 4 out of 5 stars (7)
870 users

WarnAttachment Requires Restart

WarnAttachment shows an additional dialog to confirm potentially dangerous attachments. Some attachments like executables etc. are completely blocked. This reduces the risk of malware especially for inexperienced users.

Rated 5 out of 5 stars (3)
782 users

TorBirdy Requires Restart

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

Rated 4 out of 5 stars (8)
773 users

QuickPasswords Requires Restart

Retrieve your Passwords the quick way! Never retype or display your secure passwords on screen anymore - put the password where you need it - the login form or the clipboard.

Now also includes SSO change (multi-domain pw) and Backup + Restore.

Rated 5 out of 5 stars (51)
694 users

AlertSwitch Requires Restart

Turn on/off the alert shown when new message arrives.

Rated 4 out of 5 stars (3)
574 users

Automatic Export Requires Restart

exports by an intervall or after pressing the button selected calendars in a defined folder in two modes - normal and backup...

On my homepage is the current version.
Here on this site it takes a long time after i publish a new version.

Rated 4 out of 5 stars (46)
566 users

KeeBird Requires Restart

Use KeePass Password Safe to manage your login credentials.

This is the replacement for the KeeFox extension for Thunderbird.

Rated 4 out of 5 stars (5)
562 users

MailSentry IronPort Spam Reporter Requires Restart

Report spam and ham to IronPort - originally written for our MailSentry hosted IronPort customers, it can be used by anyone who has their email filtered by an IronPort appliance.

Rated 5 out of 5 stars (2)
492 users

DL for Thunderbird Requires Restart

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

Rated 5 out of 5 stars (7)
473 users

Security Settings from Address Book Requires Restart

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

confirm-mail Requires Restart

メール送信前に宛先メールアドレスと添付ファイル名を確認することができるアドオンです。

Rated 3 out of 5 stars (4)
331 users

EuropeanMX Spam Reporter Requires Restart

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

Rated 4 out of 5 stars (2)
274 users

Too Many Recipients Requires Restart

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 (17)
265 users

Customizations for Adblock Plus

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

Rated 5 out of 5 stars (15)
255 users

Silent Block

Minimum and fast URL blocker.

Rated 4 out of 5 stars (31)
208 users