Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.
Allows bidirectional access to Google Calendar
This extension allows you to manually sort (order) your folders in the folder pane of Thunderbird or automatically sort them, but in a better way. This extension also allows you to re-order accounts in the folder pane.
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).
Support: Thunderbird and SeaMonkey
ImportExportTools NG 需要重开
OpenPGP message encryption and authentication for Thunderbird.
Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.
Synchronizes contacts & groups between Thunderbird and Google Contacts.
Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).
Add symbol in header plane to switch between compact and expanded view. New beta versions for the current beta of Thunderbird 68.0 can be found at https://github.com/jmozmoz/compactheader/
Signature Switch 需要重开
Switch the signature on/off or choose a new one from your predefined set.
Mail Merge 需要重开
Create and Save or Send Multiple Individual and Personalized Messages from a Draft
Adds some tools to import and export folders and messages
TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.
Mail Redirect 需要重开
Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird
Synchronizes selected addressbooks with other instances of thunderbird
using ftp/webdav/imap servers