Privacy and Security

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Cypherdog Encryption

Encrypt any file, any text, and share via any medium, any time

Not yet rated
34 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 (9)
33 users

New Bing Anywhere

New Bing isn't just for Edge anymore. Anywhere you want

Rated 2 out of 5 stars (2)
30 users

Check Domain Requires Restart

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

Rated 4 out of 5 stars (4)
29 users

CookieKeeper

Extended Cookie Manager - Keep only wanted cookies.

Rated 4 out of 5 stars (80)
29 users

Safelinks Cleanup

Cleans up Outlook’s “safelinks” tracking.

Minimal code to allow for easy auditing of the add-on. The only code is:
https://github.com/Cimbali/safelinks-cleanup/blob/main/src/background.js

Not yet rated
28 users

Thunderbird-DontRestoreTabs Requires Restart

Allows the user not to restore tabs at startup in Thundertbird

Rated 4 out of 5 stars (3)
24 users

TorBirdy Requires Restart

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

Rated 3 out of 5 stars (17)
21 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 (48)
20 users

Arcus

Modern encryption in Thunderbird - powered by Rust, rage and WebAssembly

Rated 5 out of 5 stars (1)
17 users

Show Password On Input Requires Restart

Gives an option to show the master password on input

Rated 4 out of 5 stars (11)
15 users

No Resource URI Leak

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 4 out of 5 stars (31)
15 users

regimail

AddOn for sending regimail with Thunderbird on Windows, MacOS and Linux.

*IMPORTANT:*
In order to use this AddOn, you need to install the regify client on your system and configure it with a valid regify account.

Not yet rated
13 users

DSN Settings 2 Requires Restart

Adds user interface settings for Delivery Status Notification (DSN) requests. This addon is useful for settings for Delivery Notification request and better experience with Notification Viewer addon.

Rated 3 out of 5 stars (2)
11 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 (45)
11 users

Zivver for Thunderbird

This extension automatically detects Zivver messages and decrypts them on-the-fly using the Zivver API. Messages are decrypted only when actively displayed by the user and are never stored locally.

Not yet rated
11 users

KeePass Helper Requires Restart

Adds a hostname, URL, or email account ID to the application's window name (e.g., that of Firefox or Thunderbird) to make it recognizable to password manager utilities like KeePass.

Rated 4 out of 5 stars (40)
11 users

clamdrib LIN Requires Restart

"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 3 out of 5 stars (8)
10 users

X-Spam-Score Column Requires Restart

Adds a column for the X-Spam-Score header.

Rated 5 out of 5 stars (1)
10 users

Clear IMAP Local Cache Requires Restart

Clears IMAP local cache on startup.

Rated 5 out of 5 stars (1)
8 users