Calendar and Date/Time
Sort by:
Lightning Invitation Notifier | LIN
This extension is an extension to Mozilla Lightning for Thunderbird.
It shows a toast message and opens the invitations window when an invitation arrives.
Provider for CalDAV & CardDAV
This extension is no longer needed. Thunderbird has native CalDAV and CardDAV support.
Birthday Calendar
Adds calendars containing the birthdays from your address books.
Multimonth view
Multimonth View allows users to display multiple months in a single calendar view,
Proton Calendar Toolbar Button
Adds a Proton Calendar button to the toolbar. The button simply opens a new tab with the https://calendar.proton.me webpage.
Open Google Tabs
Open up Google Calendar, Notes, and Microsoft Outlook in a new tab.
Dropbox Paper
How Does It Work?
Once you install the add-on, a new icon will appear in the Thunderbird toolbar. Simply click on the icon, and it will open the Dropbox Paper tab.
Will the Dropbox Paper Add-on Collect My Data?
Never.
Copy Timestamp
Copy the timestamp and/or email addresses of the sender, recipient, etc. to the clipboard in various formats.
Date detection
Turn the dates and time references in your email (e.g. "tomorrow", "in 2 hour") into clickable links. Clicking them will create an event at the corresponding date.
GCalTab
GCalTab is a Thunderbird add-on that opens Google Calendar website in a Thunderbird tab. It features a beautiful dark mode thanks to the DarkReader algorithm.
marked-lightning
Extension for Lightning: Allows the use of Markdown in Task descriptions and renders them as HTML in the TaskView.
Outlook/Teams Appointments
Get the hidden appointment from an email from outlook/teams as a .ics-file - Icon: https://fontawesome.com/
Open Google Calendar
Adds the Google Calendar web interface in a new Thunderbird tab. Creating and viewing events works like in a browser (Firefox, Chrome, ...)
Iranian Date For Thunderbird
Requires Restart
Adds a new Iranian(Persian/Jalali) date column to Thunderbird.
Todo.txt
Requires Restart
Thunderbird extension for the Todo.txt application
Lightning Colors Reminder
Requires Restart
Let's show the calendar color on Lightning reminders!
Purge Events Plus
Requires Restart
Purge events from Sunbird and Lightning files and thereby cleanes the calendar
Google Calendar Tab
Adds a button to open Google Calendar in a new Tab
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.
Custom sync interval for Lightning Calendar
Requires Restart
Allows custom synchronization intervals for remote calendars imported by Lightning Calendar (no fiddling in about:config necessary)
To create your own collections, you must have a Mozilla Add-ons account.