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Addressbooks Synchronizer

Synchronizes selected addressbooks with other instances of thunderbird
using local files, webdav servers or imap servers

Rated 4 out of 5 stars (79)
23,591 users

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

Rated 4 out of 5 stars (95)
159,618 users

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).

Rated 4 out of 5 stars (158)
1,328 users

Auto Address Cleaner T

Remove comment, display name from addresses before sending mail.

This add-on is a fork of Auto Address Cleaner.
https://addons.thunderbird.net/thunderbird/addon/auto-address-cleaner/

Rated 5 out of 5 stars (9)
9,394 users

CategoryManager

Category manager for Thunderbird 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 (23)
6,829 users

Provider for Exchange ActiveSync

Add sync support for Exchange ActiveSync (EAS v2.5 & v14.0) accounts to TbSync

Rated 4 out of 5 stars (55)
30,718 users

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.

Rated 5 out of 5 stars (54)
43,499 users

TbSync

TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.

Rated 5 out of 5 stars (251)
69,173 users

CardBook Featured

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

Twitter: @CardBookAddon

Rated 4 out of 5 stars (442)
65,589 users

Outlook Address Book Enabler

Enables the Outlook address book in Thunderbird.

Rated 4 out of 5 stars (1)
1,212 users

ExQuilla for Exchange

Thunderbird email accounts connecting to Microsoft Exchange Web Services.

Rated 4 out of 5 stars (131)
4,935 users

gContactSync Requires Restart

Synchronizes contacts & groups between Thunderbird and Google Contacts.

Rated 4 out of 5 stars (416)
15,320 users

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.

Rated 5 out of 5 stars (17)
1,121 users

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!

Rated 4 out of 5 stars (56)
7,647 users

Birthday Calendar

Adds calendars containing the birthdays from your address books.

Rated 5 out of 5 stars (22)
4,239 users

AddTo Miru Directory Server Requires Restart

The AddTo extension allows Thunderbird users to add contact cards direct to a shared miru directory server. Once added contact details are available via LDAP for auto-complete and address book search...

Rated 4 out of 5 stars (3)
0 users

Opacus SugarCRM/SuiteCRM Thunderbird Extension Requires Restart

Enables the archiving of emails into SugarCRM/SuiteCRM from Thunderbird 3 and above.

Rated 3 out of 5 stars (14)
185 users

Eortologio - Greek Namedays Calendar (Thunderbird) Requires Restart

This extension consists of a Greek Orthodox Namedays reminder. It displays in Thunderbird status bar current day's celebrated names.

Rated 5 out of 5 stars (2)
0 users

ansitel Click-to-Dial MT Requires Restart

Dieses Plugin ermöglicht das Wählen von markierten Rufnummern im Mozilla Thunderbird mit ansitel VoIP-Telefonanlagen. Einfach Rufnummer markieren und per Rechtsklick mit der Maus loswählen.

Rated 5 out of 5 stars (1)
0 users

ThunderBirthDay Requires Restart

Display birthdays from the Thunderbird addressbooks as events in Lightning.

Rated 4 out of 5 stars (97)
227 users