Auto Address Cleaner Requires Restart
Removes comment, display name automatically from addresses before sending mail.
TBDialOut Requires Restart
Place phone calls directly from Thunderbird's address book
TbSync (Provider for Exchange ActiveSync) Requires Restart
Synchronize Exchange ActiveSync accounts (contacts, tasks and calendars) to Thunderbird, supports Office 365, Outlook.com, Freenet, Strato, Hotmail, Kopano and other EAS compatible servers.
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.
MRC Compose Requires Restart
Remplace la liste d'adresses par les champs standards (Pour, Copie à, Copie cachée à) avec l'autocomplétion.
Provides standards fields (TO, CC, BCC) with autocomplete to Thunderbird's compose pane.
For bug reports, please use support email.
CardBook Requires Restart Uitgesoek
CategoryManager 2 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).
Opacus SugarCRM/SuiteCRM Thunderbird Extension Requires Restart
Enables the archiving of emails into SugarCRM/SuiteCRM from Thunderbird 3 and above.
ThunderBirthDay Requires Restart
Display birthdays from the Thunderbird addressbooks as events in Lightning.
THUNDER!Box Requires Restart
Thunder!Box allows transferring contacts from your Thunderbird-Addressbook to the phonebook of a connected AVM FRITZ!Box FON router and back. You may also use your addressbook to initiate calls.
AddressBookTab Requires Restart
It adds a button that can be put in toolbars and that open the addressbook in a new tab
ReminderFox Requires Restart
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.
gContactSync Requires Restart
Synchronizes contacts & groups between Thunderbird or SeaMonkey and Google Contacts. Imports Facebook friends, contacts you follow on Twitter, and more.
LDAP Contact Photo Requires Restart
Show contact photo stored in LDAP directory
MultiBirthdaysReminder Requires Restart
This addon is now integrated into the new address book CardBook and thus it is no longer maintained
Custom Address Sidebar Requires Restart
Allow you to help address sidebar more useful.
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.
Sender Name Requires Restart
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.
Flexible Identity Requires Restart
Selects an identity based on the recipients list when sending an email