Add-ons
Recently Updated Extensions
Sort by:
Thunderbird Conversations
Requires Restart
This addon provides a conversation view for Thunderbird, grouping messages together and allowing you to reply "inline" thus providing a more efficient workflow.
Display Mail User Agent T
Requires Restart
Displays the mail program with which the selected mail was written
*This addon is compatible with Thunderbird after Web Extesnsions support. Since development and operation check are done on Daily, it may not work on normal Thunderbird.
ReminderFox
Requires Restart
ReminderFox displays and manages lists of reminders and tasks. ReminderFox uses easy-to-use lists with warnings/alarms to remind you of all your important appointments.
Synchronize ReminderFox with other calendars as well.
Send Later
Requires Restart
Featured
True "Send Later" functionality to schedule the time for sending an email.
EDS Calendar Integration
Requires Restart
Integrates calendars events with Gnome clock applet
Version 0.7 doesn't work with EDS 3.33.2 (Ex Ubuntu 19.10).
Version 0.8 is currently available via Github > Release page.
ExQuilla for Exchange
Requires Restart
Featured
Thunderbird email accounts connecting to Microsoft Exchange Web Services.
Calendar Tweaks
Requires Restart
Allows several tweaks to the Thunderbird/Lightning calendar user interface including new selection styles and repeating event icons. Mimics the colors and styles found in MS Outlook.
Encrypt if possible
Requires Restart
Sets message security option "encrypt message", if valid X509 certificates are found for all recipients.
Phoenity Buttons
Requires Restart
Adds some toolbar buttons using phoenity icons.
Displays message headers more compact (2 lines).
Received
Requires Restart
Displays the "Received" header parsed with a regular expression.
Toggle Headers
Requires Restart
Allows to switch between the normal header view and viewing all headers when viewing a message by using a keyboard shortcut (H).
Check and Send
Requires Restart
Check the message contents and addresses before you send the message...
TbSync
Requires Restart
Featured
TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.
Owl for Exchange
Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird
Account Colors
Requires Restart
Associates user-defined colors with POP3/IMAP accounts and identities. Applies these colors to accounts, identities, folders, message list, message headers and compose headers. Users will always know which accounts/identities they are working with.
Priority Switcher
Requires Restart
Change priority of the received messages from the toolbar button and the context menus...
Quicktext
Requires Restart
Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.
Resubmit
Requires Restart
(Re)submit multiple messages to a predefined recipient(s)
CardBook
Requires Restart
A new Thunderbird address book based on the CardDAV and vCard standards.
Twitter: @CardBookAddon
Lightning
Requires Restart
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.
To create your own collections, you must have a Mozilla Add-ons account.
