Up & Coming Extensions
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
Music World Anonymous Quick Button Requires Restart
A quick button link to MusicWorldAnonymous.com. Music World Anonymous is a site about helping bands find fans for free!
Yet Another Remove It Permanently Requires Restart
Remove elements and block content on Web pages.
MEGAbird Requires Restart
Add MEGA support to Thunderbird's Filelink feature.
Add-ons Manager Context Menu Requires Restart
Add more items to Add-ons Manager context menu.
BiDi Mail UI Requires Restart
Direction control and BiDi-related charset misdetection correction
Ad Blocker lets you block all ads, tracking & malware from the web world. It is an effective solution to browse the web without offensive and annoying ads you hate to see.
LookOut (fix version) Requires Restart
LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).
Support: Thunderbird and SeaMonkey
AutoProxy-ng Requires Restart
This is a fork of AutoProxy, which can run the latest version of Firefox.
By blocking annoying ads and nosy trackers, adaware ad block nearly doubles your browsing speed! And with the most robust antivirus-level cloud-scanning technology of any ad blocker on the market, you’ll be safe from the latest cyber-threats.
Hebrew Calendar Requires Restart
Show the Hebrew date in your browser's status.
WebDAV for Filelink Requires Restart
Adds the possibility to use a WebDAV store for Filelink. With this extension you can link attachments to a WebDAV service, for example as provided by Apache's mod_dav or some public services.
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
Persona Switcher Requires Restart
Quickly switch between your personas or reset it back to the default via a menu or the keyboard. You can also automatically rotate through all of your themes on a time interval you select. Works for Firefox, Thunderbird, and Seamonkey.
GProxy Tool Requires Restart
GProxy lets you set and clear GPass local proxy in Firefox and Thunderbird, and do more.
ReplyWithHeader Requires Restart
Outlook style headers and few goodies for Thunderbird & Postbox.
OutlookAlike BETA Requires Restart
Makes Thunderbird looking like Outlook.
BlunderDelay Requires Restart
Thunderbird Extension: AutoSend Unsent Messages. Flushes entire outbox at regular intervals.
Add-on Update Checker Requires Restart
Adds Tools menu item to check Add-ons for updates. Includes toolbar icon.
Image viewer with smooth dynamic zoom, pan and rotate. View slide shows of images or files and capture page elements and tab content. Apply image filters. Save images in various formats.