Add-ons
Most Popular See all »
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True "Send Later" functionality to schedule the time for sending an email.120,565 users -
TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.49,300 users -
Add sync support for Exchange ActiveSync (EAS v2.5 & v14.0) accounts to TbSync26,379 users -
Adds the Google Calendar web interface in a new Thunderbird tab. Creating and viewing events works like in a browser (Firefox, Chrome, ...)22,043 users -
Displays tabs which allows quick navigation between time periods in Lightning calendar. All views of calendar are supported. Color of tab texts can be adjusted.20,349 users -
This extension is no longer needed. Thunderbird has native CalDAV and CardDAV support.13,800 users
Top Rated See all »
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Macro Template is to replace mail templates with macros for date formatting.586 users -
True "Send Later" functionality to schedule the time for sending an email.120,565 users
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Integrates calendars events with Gnome clock applet727 users
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Extension for Lightning: Allows the use of Markdown in Task descriptions and renders them as HTML in the TaskView.37 users
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TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.49,300 users
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This extension is no longer needed. Thunderbird has native CalDAV and CardDAV support.13,800 users
Recently Added See all »
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Shows time city/state and 24-hour local time for NANPA & international codes. Area Code locator6 users -
Provides the 'Show in Mail' URL to be added in an iOS/macOS Calendar event referering to the message ID. Can also be customized for gmail URLs using the custom URL format in the extension preferences.15 users -
Ersetzt [[TODAY]] beim Senden durch das Datum im gewünschten Format.6 users
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This plugin offers to create new events based on the email subject and content16 users -
This extension adds a simple button to your Spaces toolbar that opens in a new tab, providing you with one-click access to Outlook Calendar.975 users
See all 73 extensions in Calendar and Date/Time »
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