Privacy and Security

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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
Updated Aug. 13, 2018

Unmangle Outlook Safelinks Requires Restart

Users of Office 365 Advanced Threat Protection wil change
all url's in emails to redirect them to an Microsoft filter before opening.

This plugin wil change the url back to the original value.

Not yet rated
102 users
Updated June 28, 2018

Encrypt if possible Requires Restart

Sets message security option "encrypt message", if valid X509 certificates are found for all recipients.

Rated 4 out of 5 stars (18)
1,446 users
Updated June 24, 2018

Mail Merge Requires Restart Featured

Mass Mail and Personal Mail

Rated 5 out of 5 stars (162)
60,385 users
Updated June 13, 2018

Bitmask Thunderbird Extension Requires Restart

After installing the extension, do the following:

1. Make sure that Bitmask is running and you are logged in.
2. In Thunderbird, click the main menu, then "Preferences" - "Account Settings".
3. Click "Account Actions" - "New Bitmask Account...".

Rated 3 out of 5 stars (1)
38 users
Updated May 16, 2018

DKIM Verifier Requires Restart

Verifies the DKIM-Signature of an e-mail.

Rated 4 out of 5 stars (18)
9,617 users
Updated May 16, 2018

Flex Confirm Mail Requires Restart

Confirm mail address and attachments based on flexible rules.

Rated 3 out of 5 stars (5)
15,595 users
Updated May 8, 2018

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
Updated May 8, 2018

Logout Requires Restart

This extension adds "Logout" to the folders context menu.
After you "Logout" you will be asked again for passwords for this account (incoming and outgoing).

Rated 5 out of 5 stars (1)
78 users
Updated April 26, 2018

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
Updated April 9, 2018

Correct Identity Requires Restart

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

Rated 4 out of 5 stars (105)
1,710 users
Updated Feb. 20, 2018

InfoNotary Configurator for Mozilla Requires Restart

Configures Mozilla for work with certificates issued by InfoNotary Plc.

Rated 3 out of 5 stars (4)
49 users
Updated Feb. 14, 2018

Do Not Save Password Requires Restart

Prevents to save passwords.

Rated 5 out of 5 stars (1)
4 users
Updated Jan. 18, 2018

Check Attachment before Send Requires Restart

Confirms to send a mail with any attachment.

Rated 5 out of 5 stars (1)
14 users
Updated Jan. 18, 2018

StartupMaster

Asks for the master password at startup (fixes multiple password prompt)

Rated 4 out of 5 stars (276)
15,616 users
Updated Oct. 31, 2017

Saved Password Editor Requires Restart

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

Rated 5 out of 5 stars (388)
2,054 users
Updated Oct. 31, 2017

Password Tags Requires Restart

Adds metadata and sortable tags to the password manager.

Rated 5 out of 5 stars (13)
64 users
Updated Oct. 10, 2017

pass-manager Requires Restart

Replace integrated password managers storage with zx2c4's pass (www.passwordstore.org)

Rated 3 out of 5 stars (1)
0 users
Updated Sept. 21, 2017

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
Updated Aug. 14, 2017

Silent Block

Minimum and fast URL blocker.

Rated 4 out of 5 stars (31)
208 users
Updated Aug. 7, 2017