Contacts
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Address Move Button Requires Restart
Allow you to add a Address Move Button to mail compose window.
Display Contact Photo Requires Restart
Displays the contact photo/image/picture of the sender/recipient while reading or composing a message. Supports photos in a local folder and the 'Face' header for embedded photos. The add-on adds new generic photos and many styling possibilities.
Select Address Book Text Requires Restart
Copy and paste a name, phone number, address or other text from your Thunderbird address book quickly, with just a single menu click.
Customizable LDAP AddressBook Auto Complete Requires Restart
Provides (restores) customizability of auto complete items for LDAP addressbook items, and more features.
printplus Requires Restart
PDF export support by Gecko.
https://github.com/hATrayflood/printplus
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.
SoundPlus Requires Restart
SoundPlus customizes the sound that is played when a new message arrives for a particular contact in the address book, similar to mobile phones. There is also a variation that is played when a message arrives and it is a continuation of a thread.
ThunderBirthDay Requires Restart
Display birthdays from the Thunderbird addressbooks as events in Lightning.
@Contact Mention
This add-on mimics the mentions behavior on Outlook when mentioning a contact with the '@' sign. The contact selected is added as a link in the email body as well as to the recipent list of the email.
SMSalias MozClient Requires Restart
SMSalias is a Firefox/Thunferbird extension that enables you to send SMS messages directly from Browser/email application...
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.
Crmthdb Lite ZohoCRM Thunderbird Extension Requires Restart
Connect Thunderbird and share mails with ZohoCRM. The Lite version lets you display contacts of Zoho CRM inside Thunderbird. The full version on http://sites.google.com/site/crmthdb lets you archive your mails and add contacts into Zoho CRM.
ThunderSync Requires Restart
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.
LDAP Swapping Requires Restart
This extension allow you to simply switch on / off the LDAP autocompletion.
Card Viewer Extended Requires Restart
Adds a button in address book cards to fetch and display the certificate of a contact.
Recently
Recently is a small Mozilla Thunderbird extension for having the most recent contacts at hand
addressContext Requires Restart
An extension to add addressbook-related options to the context...
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).
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!
Addressbooks Synchronizer
Synchronizes selected addressbooks with other instances of thunderbird
using local files, webdav servers or imap servers
To create your own collections, you must have a Mozilla Add-ons account.