Privacy and Security

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Password Tags Requires Restart

Adds metadata and sortable tags to the password manager.

Rated 5 out of 5 stars (15)
7 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 (18)
7 users

Highlight External Addresses Requires Restart

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 (2)
6 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)
6 users

Batch Copy Requires Restart

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 (9)
5 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)
5 users

Sender Address Columns Requires Restart

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

Rated 5 out of 5 stars (5)
5 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)
5 users

Disable Signature Requires Restart

Allows to disable the S/MIME signature of messages. Afterwards, these messages are no longer recognized as signed and their attachments can be deleted or detached.

Rated 5 out of 5 stars (1)
4 users

Autocrypt Requires Restart

E-Mail encryption that gets out of your way. Compatible with Autocrypt and OpenPGP.

EARLY ACCESS, MAY CONTAIN BUGS!

Caution: This extension can not be used together with Enigmail. Please remove Enigmail before installing.

Rated 4 out of 5 stars (10)
4 users

View Your Certificates Email Address

Adds a column for displaying the certificates Email address to the "Your Certificates" tab of the Certificate Manager

Rated 5 out of 5 stars (5)
4 users

acus

Update 2023: This addon will be replaced by "arcus".

Modern encryption in Thunderbird

** Currently in testing phase **
What you can do:
1. Set your secret key and automatically decrypt emails
2. Generate a new key pair
3. Encrypt plain text

Not yet rated
4 users

EagleCloud Extension

Works along with EagleCloud Information Security product to secure sensitive information based on company policy.

Not yet rated
4 users

ThunderSec Requires Restart

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 4 out of 5 stars (7)
3 users

TracEmail Requires Restart

A tool to raise awareness on email privacy. Visualizes the estimation of the path of your email messages on an interactive map. You can see which countries might have taken a copy of the message.

Rated 4 out of 5 stars (2)
3 users

PGP Universal

Fixes encrypted e-mail attachment names from PGP Universal servers

Not yet rated
2 users

Un-Safelinks Requires Restart

Replace URLs which have been rewritten by Office 365 Advanced Threat Protection with the original URL.

Not yet rated
2 users

ReloadPAC Requires Restart

Workaround for Bug 351163 (Thunderbird bypasses proxy.pac for first connection).

Not yet rated
2 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)
1 user

WebPG for Mozilla Requires Restart

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

Rated 3 out of 5 stars (24)
1 user