Privacy and Security


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)
473 users

Sender Address Columns Requires Restart

Adds optional columns to the Thread Pane to allow sorting email messages by:
* Full sender address -- e.g. ""
* Sender's domain -- e.g. ""
* Sender's local part -- e.g. "someone"
* Sender's TLD -- e.g. ".com"

Rated 5 out of 5 stars (3)
213 users

Certificate Patrol Requires Restart

Your browser trusts many certification authorities and intermediate sub-authorities quietly, every time you enter an HTTPS web site. This add-on reveals when certificates are updated, so you can ensure it was a legitimate change.

Rated 4 out of 5 stars (68)
4,106 users

Correct Identity Requires Restart

Ever sent mail from the wrong email address because you forgot to select the correct identity in the compose window?

Rated 4 out of 5 stars (101)
6,397 users

MailHops Requires Restart

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)
2,297 users

Trueblock Plus Requires Restart

Trueblock Plus is a fork of the Adblock Plus extension for blocking unwanted advertisements on the web. This fork provides the exact same features as Adblock plus, with the unpopular, unwanted "acceptable ads" (non-)feature turned off by default.

Rated 4 out of 5 stars (44)
346 users

Identity Select Requires Restart

This extension allows you to choose the identity of your new email from a popup menu directly from the Write button. This feature behaves in a similar manner as the Get Mail pulldown menu. In addition, the default behavior of the Write button is...

Rated 4 out of 5 stars (10)
0 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 (530)
156,857 users

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 (8)
949 users

GProxy Tool Requires Restart

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

Rated 4 out of 5 stars (8)
2,160 users

Element Hiding Helper for Pan

Help you create element hiding rules for Pan to fight the text ads.

Rated 4 out of 5 stars (8)
116 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 (7)
4,187 users

TorBirdy Requires Restart

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

Rated 4 out of 5 stars (8)
938 users

XML Digital Signature Tool Requires Restart

XML Digital Signature Tool is a Firefox add-on for processing Digital Signature in XML documents
(Please read the installation instruction in the "Developer Comments" section before downloading)

Rated 5 out of 5 stars (4)
16 users

KDE5 Wallet password integration Requires Restart

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

Rated 4 out of 5 stars (29)
962 users

Show Password On Input Requires Restart

Gives an option to show the master password on input

Rated 4 out of 5 stars (11)
541 users

HabuL Requires Restart

Reports spam to the SpamCop, the FTC, FDA, SEC, ACMA and/or It also allows you to put in your own custom addresses to report spam to such as your ISP or corporate abuse address.

Rated 4 out of 5 stars (33)
1,315 users

Fingerfox (SE) Requires Restart

Use MS Fingerprint Reader with Firefox and Thunderbird...

Rated 4 out of 5 stars (12)
349 users

Sender Verification Anti-Phishing Extension Requires Restart

Protects you from phishing attacks by verifying the From: address domain name of emails as you read them. Sender Policy Framework (SPF) and DNS-based reputation lists are used.

Rated 4 out of 5 stars (20)
19 users

Get before Send Requires Restart

Get messages for the account which is bound to the identity then send the message when you click the toolbar button or the menu item. If your SMTP sever authenticates using POP(IMAP) before SMTP, the extension is useful.

Rated 5 out of 5 stars (2)
922 users