Most Popular Extensions
Headers Toggle Requires Restart
Gives Thunderbird a keyboard shortcut (H) to change how headers are displayed.
compactfolder Requires Restart
A toolbar button for compacting/purging the currently-viewed...
TB Reset Quote Header Extension Requires Restart
You can now modify the look of the quote header on replies. Quote header templates are included in the xpi ( open the xpi with a archive program like winzip and extract the two txt files) Then, in the extension's options page, type the word...
Zonio Freebusy for Lightning Requires Restart
Finds when are people available for a meeting or event via Zonio Freebusy service. Displays freebusy blocks instantly in Invite Attendees window while attendees are being added. Works with both local calendar storage or any calendar provider.
pass-manager Requires Restart
Replace integrated password managers storage with zx2c4's pass (www.passwordstore.org)
BOINC Stats 2 Requires Restart
Displays your Total and Recent Average Credits for BOINC distributed computing projects in the status bar.
Archived Link Requires Restart
Archived Link displays the URL of the Archived-At email message header field (RFC-5064) as a hyperlink.
Hide Clear List Button Requires Restart
Hide the "Clear List" Button in the Download Manager.
xmpp4moz Requires Restart
xmpp4moz integrates the XMPP protocol (also known as Jabber) into Mozilla applications.
GDirections Requires Restart
Finds directions on Google and Yahoo Maps based on your selected text and one of various home addresses that you can store.
AboutConfig Requires Restart
Durch das Plug-in werden unsere praktischen E-Mail-Vorlagen Ihrer Thunderbird-Symbolleiste hinzugefügt
ansitel Click-to-Dial Thunderbird Requires Restart
Click-to-Dial Plugin für ansitel VoIP-Telefonanlagen zum Markieren und Wählen von Rufnummern in Mozilla Thunderbird.
NirvanaHQ Requires Restart
NirvanaHQ for Thunderbird
eArztbrief Requires Restart
Für die an SafeMail teilnehmenden Ärzte.
PassToScript extension Requires Restart
Extension to pass e-mail in eml (raw) format directly to the script specified
Mailopen Requires Restart
Open an email file from the commandline
Russian hot keys bugfix Requires Restart
Makes hot keys work with Russian, Ukrainian and Hebrew keyboard layout in Linux and *BSD (needed only for GTK2 builds).
Sync On Arrival Requires Restart
Downloads new message headers (and bodies, if configured) immediately when Thunderbird detects new messages in an IMAP folder - that's more or less what the "download_on_biff" preference promises to do, but somehow fails to deliver...
Sender Verification Anti-Phishing Extension Requires Restart
Protects you from phishing attacks by verifying the From: address domain name of emails as you read them. Sender Policy Framework (SPF) and DNS-based reputation lists are used.