Add-ons
Contacts
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Serial Letter
Requires Restart
Provides the ability to start writing a template-derived letter directly from within the address book. Supports also multiple recipients. Supports only TeX and similar systems at the moment.
Check Recipients
Requires Restart
Checks the existence of email addresses of all recipients in Compose message window from local address books and LDAP directories.
OpenERP Plugin
Requires Restart
OpenERP Thunderbird Integration for version starting from 6.1.
Recently
Recently is a small Mozilla Thunderbird extension for having the most recent contacts at hand
Windows Contacts Loader
Requires Restart
Loads Windows Contacts from Windows 7 or Vista in a Thunderbird Address Book called "Windows".
EMail Address Crawler
Requires Restart
Automatically fill your address books or send mass mails with e-mail addresses extracted from all your e-mails.
CardDAV Browser
A utility to browse vCards stored on a CardDAV server.
This version is only for Thunderbird. There is a SeaMonkey version available if needed.
BirdFon
Requires Restart
BirdFon, a lightweight and elegant phone plugin, makes Thunderbird a speaking friend in your online life. With BirdFon you can call your friends in a way similar to the SkypeOut service. The major BirdFon advantage is that it allows you to make...
Birthday Calendar
Google-4-TbSync
This provider add-on adds Google synchronization capabilities to TbSync. Only contacts and contact groups are currently managed, using Google's People API.
Please read the "About this Add-on" section below carefully!
Outlook Address Book Enabler
gContactSync
Requires Restart
Synchronizes contacts & groups between Thunderbird and Google Contacts.
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.
ExQuilla for Exchange
Thunderbird email accounts connecting to Microsoft Exchange Web Services.
TbSync
TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.
CardBook
Featured
A new Thunderbird address book based on the CardDAV and vCard standards.
Twitter: @CardBookAddon
Provider for Exchange ActiveSync
Add sync support for Exchange ActiveSync (EAS v2.5 & v14.0) accounts to TbSync
Provider for CalDAV & CardDAV
This extension adds support for CalDAV & CardDAV accounts to the Thunderbird Sync manager "TbSync". Including iCloud, ownCloud, Nextcloud, Radicale and many more.
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).
LookOut (fix version)
LookOut decodes winmail.dat (TNEF encoded) files that may come from a misconfigured Microsoft Exchange server or Outlook user allowing access to the original attachments
Support: Thunderbird
To create your own collections, you must have a Mozilla Add-ons account.
