notto Requires Restart

Do not send mail to the addresses found into notTo field.

zFiler mail Requires Restart

Automatic conversion from 'plain' attachments to zFiler links, when message is being sent.

filemail

Move mails to the same folder where previously mails have been moved from this author by hitting a single key

esri

This is an extension that enables "View in ArcGIS.com".

All mail from all accounts Requires Restart

Add a toolbar button to send and receive all mail from all accounts for Leopard theme.

Solpets Quick Button Requires Restart

A quick button link to the virtual pet site, Solpets.com.

google-pagerank

mailAD Requires Restart

MailADは、メールの中の広告を削除するアドオンです。
Adblock Plusのメール版みたいなイメージです。

Flat Folder Tree Requires Restart

Selectively breakout or promote sub-folders under an intermediate folder in the folder tree. Use with IMAP servers where some folders remain collapsed under special namespace like [Gmail] or the INBOX itself.

Provider for Microsoft Exchange Requires Restart

The lightning-exchange-provider addon allows you to use Microsoft Exchange calendars in Thunderbird, via Exchange’s web services.

This addon only works with Microsoft Exchange 2007 and above. Exchange 2003 is not supported.

Send Later

True "Send Later" functionality to schedule the time for sending an email.

New Mail Attention Requires Restart

This addon calls attention to main window on new message arrival.

Unified Search Requires Restart

Unify the global search box and the quick filter box in a new widget (the 'Unified Search Widget') with all filter and search capabilities at once.

Hindi Pop up Requires Restart

After installing this extension, just hover the mouse on top of an English word and a pop-up will appear with suggestions of possible hindi equivalents.

Teamworkx Thunderbird Integration for Jira Requires Restart

This is a add-on for Thunderbird as well as Seamonkey which is able to create Atlassian Jira issues out of e-mails or add the content of an e-mail as a comment on an Jira issue.

Windows Contacts Loader Requires Restart

Loads Windows Contacts from Windows 7 or Vista in a Thunderbird Address Book called "Windows".

Imap-ACL-Extension Requires Restart

Extension to manage acls/permissions for shared mailboxes/folders on imap servers.

Subject Manager Requires Restart

Manages subject of composed emails.

Sensitive Attachment Guard Requires Restart

A Thunderbird add-on censor sensitive attachments (currently Microsoft Office documents) from being sent to unintended recipients.

Get Selected Mails Requires Restart

Gets new messages for selected mail accounts.