Calendar and Date/Time

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Copy Reminder List To Clipboard No Restart

Provides button to copy the list of current reminders to the clipboard.

Rated 1 out of 5 stars (1)
0 users
Added September 2, 2015

Show Calendar Week

Shows the calendar week Thunderbird/Lightning calendar's moth and multi-week view.

Not yet rated
355 users
Added May 22, 2015

NirvanaHQ

NirvanaHQ for Thunderbird

Not yet rated
4 users
Added May 16, 2015

Simple Week View

A simple week view for Lightning, as in the print layout.

Rated 3 out of 5 stars (3)
423 users
Added February 9, 2015

Lightning Reminder Left Buttons

Tired to mistakenly press that "Dismiss All" button? Move the Lightining Reminder "Snooze all for" and "Dismiss All" buttons to the LEFT!
... and from version 2.0 you can keep them on the RIGHT, but swapped!

Not yet rated
556 users
Added January 30, 2015

Date on Thunderbird

在thunderbird statusbar显示年月日

Rated 4 out of 5 stars (1)
23 users
Added August 27, 2014

MultiBirthdaysReminder

Manage All Birthdays

Thanks to :
Sebastian Apel : this pluggin was inspired by its brilliant pluggin : Birthday Reminder
Johannes Kayßer : German translation
Johannes Beulshausen : 2 annoying bugs
Nick2222 : sending email suggestion

Rated 5 out of 5 stars (3)
295 users
Added August 5, 2014

EDS Calendar Integration

Integrates calendars events with Gnome clock applet

IMPORTANT:
Plugin may hang on Fedora.
As a workaround uninstall evolution-ews.

Rated 4 out of 5 stars (4)
190 users
Added May 6, 2014

Macro Template No Restart

Macro Template is to replace mail templates with macros for date formatting.

Rated 5 out of 5 stars (1)
298 users
Added October 15, 2013

DM Sync

This plugin allows you to synchronize addressbooks and contacts stored on the DM mail server

Not yet rated
15 users
Added September 19, 2013

OBM Connector

OBM Lightning Calendar and addressbooks connector

Not yet rated
594 users
Added September 12, 2013

MiniWebView Sidebar

Sidebar that shows a single web page. This allows Thunderbird to be augmented with any user-supplied or third-party web page. The screenshot shows an example - I use my own custom web page to present my Google Calendar in my preferred format.

Rated 5 out of 5 stars (4)
56 users
Added May 27, 2013

StormCows

Allows two-way access between Remember The Milk and calendar events or todo items.

Rated 4 out of 5 stars (10)
475 users
Added May 9, 2013

SanRockstar

Music

Rated 5 out of 5 stars (3)
66 users
Added May 8, 2013

Reply Monitor

Keep track of your emails and replies (Lightning is required).
Note: the name of this add-on has been changed to Reply Monitor because the previous name is a registered trademark.

Rated 4 out of 5 stars (19)
1,442 users
Added December 24, 2012

Lightning Calendar Tabs

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.

Rated 4 out of 5 stars (7)
25,830 users
Added July 29, 2012

Event-extract

Helps to add emails more easily to your calendar. Suggests date and time information based on email content when converting to an event or a task. Depends on Lightning addon for calendaring.

Rated 2 out of 5 stars (7)
543 users
Added December 7, 2011

Purge Events Plus

Purge events from Sunbird and Lightning files and thereby cleanes the calendar

Rated 4 out of 5 stars (9)
990 users
Added July 17, 2011

Montezooma

Montezooma is a Thunderbird Addon that adds zooming functionality to windows.

Rated 3 out of 5 stars (8)
957 users
Added October 23, 2010

Send Later

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

Rated 5 out of 5 stars (39)
54,366 users
Added July 9, 2010