Top-Rated Extensions

Subscribe

Stego Block Requires Restart

Embeds a small secondary, encrypted message in an email, known as a Stego Block.

Rated 4 out of 5 stars (1)
20 users

CALDAV - Search/Subscribe Requires Restart

Add CalDAV search & subscribe feature to Lightning

Rated 2 out of 5 stars (11)
2,615 users

Protected E-mail Addresses Requires Restart

Generates protected and disposable e-mail addresses and filters junk mail sent to invalid addresses.

Rated 4 out of 5 stars (1)
125 users

Sensitivity Header Requires Restart

Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
This allows the user to select Private / Personal / Company-Confidential (or none) for an outgoing message.

Rated 4 out of 5 stars (1)
80 users

QuickFilterPlus

Adds personal filters to quickfilter toolbar

Rated 4 out of 5 stars (1)
137 users

DSN Settings Requires Restart

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

Rated 4 out of 5 stars (1)
95 users

No Close Other Tabs Requires Restart

Removes "Close other tabs" context menu item.

Rated 4 out of 5 stars (1)
23 users

Smart OwnCloud Filelink Requires Restart

Filelink pour serveur Owncloud

Rated 4 out of 5 stars (1)
73 users

ThunderBridge Requires Restart

P2P e-mail delivery.

Rated 4 out of 5 stars (1)
198 users

Lightning Reminder Left Buttons Requires Restart

Tired to mistakenly press that "Dismiss All" button? Move the Lightining Reminder "Snooze all for" and "Dismiss All" buttons to the LEFT!
... and from version 2.0 you can keep them on the RIGHT, but swapped!

Rated 4 out of 5 stars (1)
1,143 users

AddressBook in Tab Requires Restart

Adds a button that can be put in toolbars which opens the addressbook in a new tab like pastismans AddressBookTab

Rated 4 out of 5 stars (1)
506 users

Crash Me Now! (Simple)

Crash yourself with ease

Rated 4 out of 5 stars (1)
45 users

Google Mail Tab for Thunderbird Requires Restart

Open Google Mail in a new tab inside of Mozilla Thunderbird

Rated 3 out of 5 stars (2)
15 users

eelpout Requires Restart

The anti-phish. An informative phishing detection...

Rated 3 out of 5 stars (2)
6 users

Folder Selection (Thunderbird) Requires Restart

A popup window for selecting any folder when the folder pane is hidden...

Rated 3 out of 5 stars (2)
10 users

mouseless Requires Restart

I did my best so that operation might be possible with a keyboard...

Rated 2 out of 5 stars (9)
1 user

Dooth Requires Restart

Dooth passphrase decryption

Rated 4 out of 5 stars (1)
2 users

mozCleaner

Cleans your Firefox, Thunderbird, SeaMonkey, Fennec (unstable), Instantbird and BlueGriffon.

Rated 3 out of 5 stars (5)
1,897 users

Spamato4Thunderbird Requires Restart

A multi-faceted, collaborative approach against spam.

Rated 2 out of 5 stars (31)
315 users

Mark Read On Reply Requires Restart

A simple extension to mark messages read after you click a reply menu or button (or Ctrl+R)

Rated 3 out of 5 stars (3)
55 users