Up & Coming Extensions

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Key Manager

KeyManager Tool: Firefox Add-on for Key Generation, Certificate Enrollment, CRL Signing, and Identity and Authority Delegation

Rated 3 out of 5 stars (20)
1 111 gebruikers

GNotifier No Restart

Add-on for Firefox and Thunderbird. Integrates Firefox's notifications with the OS's native notification system. It supports most Linux desktops and Windows 8.

Rated 5 out of 5 stars (35)
10 964 gebruikers

tzpush

Z-Sync to Thunderbird Addressbook
Will sync Thunderbird address book to Zentyal, Zarafa, Horde and outlook.com/hotmail.

Rated 4 out of 5 stars (9)
1 137 gebruikers

Join-NG

Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".

Rated 5 out of 5 stars (2)
1 509 gebruikers

RequestPolicy Sync No Restart

Sync engine for RequestPolicy.

Rated 5 out of 5 stars (3)
1 313 gebruikers

Mail Redirect

Allow to redirect (a.k.a. "bounce") mail messages to other recipients.

Rated 4 out of 5 stars (119)
31 415 gebruikers

Browser View Plus (PlayLink)

Open links, pages, and bookmarks in any other browser or media player. Modify any menu, browser name or location. Incognito/private browsing mode is also supported.

Rated 5 out of 5 stars (16)
1 512 gebruikers

XNote++

Persistent sticky notes for Thunderbird associated to mails.
This is a port to Thunderbird >= 3 and Seamonkey >= 2 based on XNote 2.1.0 ( https://addons.mozilla.org/en-US/thunderbird/addon/3093 ) with bugfixes and additional features.

Rated 5 out of 5 stars (62)
19 268 gebruikers

Open Multiple Locations

Adds a "File" menu option to open multiple locations at a time.

Rated 4 out of 5 stars (17)
3 857 gebruikers

Lightning Uitgesoek

Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.

Rated 3 out of 5 stars (1 825)
1 134 045 gebruikers

ImportExportTools

Adds some tools to import and export folders and messages

Rated 4 out of 5 stars (111)
310 440 gebruikers

CookieKeeper No Restart

Extended Cookie Manager - Keep only wanted cookies.

Rated 4 out of 5 stars (33)
12 359 gebruikers

HTitle

Hide title bar if window is maximized.

This extension created only for GNOME 3. It can create problems with another DE (KDE, XFCE, etc). However, you can use HTitle at your own risk (need enable "legacy" mode on settings page).

Rated 5 out of 5 stars (81)
6 491 gebruikers

Addressbooks Synchronizer

Synchronizes selected addressbooks with other instances of thunderbird
using ftp/webdav/imap servers

Rated 4 out of 5 stars (56)
33 207 gebruikers

Fireclam

Use ClamAV to scan Firefox downloads for viruses.

Rated 4 out of 5 stars (45)
3 797 gebruikers

Send Filter

This add-on allows you run your message filters automatically on outgoing messages after sending. In other words, it's a outgoing filter for thunderbird and seamonkey.

Rated 4 out of 5 stars (38)
5 141 gebruikers

Smiley Fixer

Fixes Wingding Smileys in Outlook-generated emails

Rated 5 out of 5 stars (15)
4 648 gebruikers

Highlighter

Quickly highlight some text in Thunderbird message composing windows.

Rated 4 out of 5 stars (41)
7 968 gebruikers

FolderFlags

Allows users to edit the flags Thunderbird sets on folders.

Rated 5 out of 5 stars (7)
4 250 gebruikers

Year view

Year view for calendar.

Rated 4 out of 5 stars (44)
4 422 gebruikers