Contacts

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ReminderFox

ReminderFox displays and manages lists of reminders and ToDo's. ReminderFox makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarms, right in your browser without the need for a separate calendar program.

Rated 4 out of 5 stars (527)
81,755 users
Updated July 20, 2016

CardBook

A new Thunderbird address book based on the CardDAV and vCard standards.

Rated 4 out of 5 stars (60)
4,839 users
Updated July 18, 2016

CALDAV - Search/Subscribe

Add CalDAV search & subscribe feature to Lightning

Rated 2 out of 5 stars (8)
2,159 users
Updated July 12, 2016

LookOut (fix version)

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

Rated 5 out of 5 stars (2)
2,240 users
Updated June 25, 2016

PopMailListRecipients

Adds a toolbar button to expand address book lists to its recipients - useful to stripe out some of them when sending mail...

Rated 4 out of 5 stars (14)
1,251 users
Updated June 14, 2016

Contact Tabs

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.

Rated 4 out of 5 stars (53)
19,776 users
Updated June 6, 2016

CategoryManager

Category manager for CardDav contacts, also allows to send an email to all members of a category (categories can be used as contact groups).

Rated 5 out of 5 stars (9)
2,504 users
Updated May 2, 2016

Auto Address Cleaner

Removes comment, display name automatically from addresses before sending mail.

Rated 4 out of 5 stars (49)
17,381 users
Updated April 26, 2016

gContactSync

Synchronizes contacts & groups between Thunderbird or SeaMonkey and Google Contacts. Imports Facebook friends, contacts you follow on Twitter, and more.

Rated 4 out of 5 stars (218)
82,432 users
Updated April 25, 2016

Contact Photos

Displays contact photos in the message header.

Rated 4 out of 5 stars (22)
2,093 users
Updated April 25, 2016

Telify

Converts telephone numbers into clickable links for use with CTI applications, SIP clients, Skype, Netmeeting, snom phones, the AGFEO TK-Suite Client and SerVonic IXI-PCS.

Rated 4 out of 5 stars (57)
12,911 users
Updated February 28, 2016

ExQuilla for Microsoft Exchange

Thunderbird email accounts, including contacts, connecting to Microsoft Exchange Web Services. This is a 60 day trial of a paid add-on.

Rated 3 out of 5 stars (96)
17,922 users
Updated February 7, 2016

Dialectic Dialer

Dial phone numbers with Dialectic (Dialectic is for OS X only). In addition, when a page loads, phone numbers can optionally be highlighted and hyperlinked to dial Dialectic.

Not yet rated
26 users
Updated January 23, 2016

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 (12)
2,118 users
Updated December 5, 2015

LDAP - View Groups Members

Allow the user to view the members of the LDAP directories in the addressbook

Rated 3 out of 5 stars (4)
621 users
Updated November 22, 2015

ThunderSync

Allows to synchronise Thunderbird's addressbook with external directories/files. Every contact is exported/compared with an external file. Right now, only vCard version 2.1 is supported as export file format.

Rated 3 out of 5 stars (19)
11,405 users
Updated November 10, 2015

SendToSecondEmail

This Extension lets you send Mails to both, first and second email address...

Rated 5 out of 5 stars (1)
29 users
Updated October 26, 2015

Opacus SugarCRM 6.2+ Thunderbird Integration Pro

SugarCRM 6.2.0-7.6.x/SuiteCRM 7.x Integration for Thunderbird

Enables archiving of emails into SugarCRM and SuiteCRM from Thunderbird. Requires a purchased license key (you can request a trial from within the extension).

Rated 5 out of 5 stars (1)
644 users
Updated October 23, 2015

Contact DnD

Enables one to assign a photo to a contact by dragging and dropping it from the local filesystem.

Not yet rated
16 users
Updated October 14, 2015

Additional Chat Protocols for Thunderbird

Add support for chat protocols implemented in libpurple.

Rated 3 out of 5 stars (35)
2,100 users
Updated October 13, 2015