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Signature /Auto Paste /Prefill Fourms

Makes everyday entries to forms & forums simpler!
Add a sig. with just a Rclick of the mouse and select 'Add Sig.' from the context menu.
(Please, note: What you see in the pic is only an example. ThoseRMine Sorry, you have to make your own tabs. )

Rated 4 out of 5 stars (21)
4,048 users

Birthday Reminder

Birthday Reminder reminds of upcoming birthdays for all contacts in Thunderbird's address book. Supports Lightning, reminders and even Google Calendar :-)

Rated 3 out of 5 stars (20)
3,725 users

Custom Address Sidebar

Allow you to help address sidebar more useful.

Rated 4 out of 5 stars (6)
3,635 users

EMail Address Crawler

Automatically fill your address books or send mass mails with e-mail addresses extracted from all your e-mails.

Rated 4 out of 5 stars (89)
3,603 users

SoundPlus

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.

Rated 3 out of 5 stars (13)
2,674 users

Sender Name

Rated 4 out of 5 stars (40)
2,669 users

addressContext

An extension to add addressbook-related options to the context...

Rated 4 out of 5 stars (50)
2,093 users

Additional Chat Protocols for Thunderbird

Add support for chat protocols implemented in libpurple.

Rated 4 out of 5 stars (34)
2,070 users

EmailPicky 4

Grab email addresses from emails from any selected Email Folder and add them to your contacts. (Email Crawler / Email ID Grabber / Bounced email collector) - Thunderbird Plugin

Rated 3 out of 5 stars (4)
2,063 users

Address Move Button

Allow you to add a Address Move Button to mail compose window.

Not yet rated
2,016 users

Contact Photos

Displays contact photos in the message header.

Rated 4 out of 5 stars (22)
1,932 users

CALDAV - Search/Subscribe

Add CalDAV search & subscribe feature to Lightning

Rated 2 out of 5 stars (7)
1,870 users

THUNDER!Box

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.

Rated 5 out of 5 stars (24)
1,855 users

TBDialOut

Place phone calls directly from Thunderbird's address book

Rated 5 out of 5 stars (8)
1,761 users

Opacus SugarCRM/SuiteCRM Thunderbird Extension

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

Rated 5 out of 5 stars (5)
1,629 users

Flexible Identity

Selects an identity based on the recipients list when sending an email

Rated 4 out of 5 stars (19)
1,553 users

Awesome ldapInfoShow No Restart

Show contact photo and other info from Local Dir, Addressbook, LDAP, Facebook, LinkedIn, Flickr, Gravatar etc

Rated 4 out of 5 stars (10)
1,460 users

Export for Thunderbird & Lightning Launcher

Export for Thunderbird & Lightning is the worldwide unique printing and exporting solution for Mozilla Thunderbird and Lightning for Windows.
Multi lingual user interface: English, German, French and Spanish

Rated 2 out of 5 stars (9)
1,452 users

Too Many Recipients

Contourne la limite du nombre de destinataires/e-mail des serveurs SMTP.
Gets around the limit on the number of recipients/e-mail of SMTP servers.
Evita la limitación de número de destinatarios/e-mail del servidor SMTP.

Rated 4 out of 5 stars (14)
1,418 users

AddressBook In Mode ToolBar

Add adressbook button to "mode toolbar" (requires lightning extention)

Rated 4 out of 5 stars (7)
1,399 users