Add-ons
Contacts
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gContactSync
Requires Restart
Synchronizes contacts & groups between Thunderbird or SeaMonkey and Google Contacts. Imports Facebook friends, contacts you follow on Twitter, and more.
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
LookOut
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).
CardBook
Requires Restart
Featured
A new Thunderbird address book based on the CardDAV and vCard standards.
Twitter: @CardBookAddon
Addressbooks Synchronizer
Requires Restart
Synchronizes selected addressbooks with other instances of thunderbird
using ftp/webdav/imap servers
ExQuilla for Microsoft Exchange
Requires Restart
Thunderbird email accounts connecting to Microsoft Exchange Web Services.
Contact Tabs
Requires Restart
Contact Tabs enhances Thunderbird to give you quick access to all your contacts directly from Thunderbird's main window: Use the powerful search field to find your contacts and open them in a new tab for viewing and editing.
TbSync
TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.
ThunderBirthDay
Requires Restart
Display birthdays from the Thunderbird addressbooks as events in Lightning.
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
Provider for Exchange ActiveSync
Add sync support for Exchange ActiveSync (EAS v2.5 & v14.0) accounts to TbSync
Auto Address Cleaner
Requires Restart
Removes comment, display name automatically from addresses before sending mail.
CategoryManager
Requires Restart
Category manager for Thunderbird contacts, also allows to send an email to all members of a category (categories can be used as contact groups).
Custom Address Sidebar
Duplicate Contact Manager
Requires Restart
Facilitates handling of duplicates in your address book(s). Allow to search and remove similar contacts.
Provider for CalDAV & CardDAV
This extension adds support for CalDAV & CardDAV accounts to the Thunderbird Sync manager "TbSync".
Contacts Sidebar
Requires Restart
Displays the address books in a sidebar in Thunderbirds 3-pane-window and can be toggled with the F4 key or a toolbar button.
Visit my Contacts Sidebar site for recent versions and news.
Duplicate Contacts Manager
Requires Restart
This Thunderbird add-on searches address book(s) for pairs of matching contact entries.
It can automatically delete entries that have equivalent or less information than the other one.
Any remaining matches are presented for manual treatment.
Address Move Button
Requires Restart
Allow you to add a Address Move Button to mail compose window.
Zindus
Requires Restart
Google and Zimbra contact sync for Thunderbird. (TB 24 and above NOT supported)
To create your own collections, you must have a Mozilla Add-ons account.
