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LightningButton Requires Restart

Toolbar-Buttons for Lightning; advances the feature to get rid of the tabbar.

Rated 4 out of 5 stars (23)
3,235 users

Lightning Colors Reminder Requires Restart

Let's show the calendar color on Lightning reminders!

Rated 4 out of 5 stars (4)
242 users

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.

Rated 4 out of 5 stars (83)
2,126 users

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.

Rated 4 out of 5 stars (2)
2,199 users

Lightbird Requires Restart

Standalone calendar UI for Lightning

Rated 4 out of 5 stars (21)
124 users

Lightning QR Code Add-on

Integrate QR codes for calendar events into tooltips for easy transfer to mobile devices.

Rated 5 out of 5 stars (14)
31 users

ThunderBirthDay Requires Restart

Display birthdays from the Thunderbird addressbooks as events in Lightning.

Rated 4 out of 5 stars (97)
220 users

SyncKolab Requires Restart

SyncKolab can synchronize your calendar, address book and tasks against an IMAP server in Kolab formats version 1 (vCard/iCal) or version 2 (XML) or turn your Thunderbird/Lightning into a native Kolab Client (http://kolab.org).

Rated 3 out of 5 stars (78)
25 users

Lightning Reminder Left Buttons Requires Restart

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!

Rated 3 out of 5 stars (2)
10 users

SRB Lightning Requires Restart

An integrated calendar for Thunderbird build in purpose testing Serbian translation. You can download version: 1.0b2, 1.0b1 and 0.11 Inverse Edition which work with version 3.1, 3.0 and 2.0 Thunderbird. Windows, Linux and Mac are all supported.

Not yet rated
0 users

xpDefault Colored Buttons Requires Restart

Default XP theme for ThunderBird 45. (Mail and Lightning calendar)
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After long time of inactivity, Michal Stanke decided not to update xpDefault.
I propose to try, and make this version, tested on Vista and Win 8.1.
new 45.0.3 16 oct 2016

Rated 5 out of 5 stars (23)
16 users

Automatic Export Requires Restart

exports by an intervall or after pressing the button selected calendars in a defined folder in two modes - normal and backup...

On my homepage is the current version.
Here on this site it takes a long time after i publish a new version.

Rated 4 out of 5 stars (48)
19 users

Trashcan Requires Restart

Have you ever accidentally deleted an event and didn't notice? Undo is no longer available? Then this extension is for you! All deleted items are put into a special Trashcan calendar for your safety.

Rated 2 out of 5 stars (9)
6 users

Free/Busy Requires Restart

Publish free/busy calendar file (*.ifb) via ftp or to a file. View other people's free/busy info in meeting organizer window. Integrate Thunderbird and Outlook calendars without Exchange server.

Rated 3 out of 5 stars (14)
7 users

Purge Events Plus Requires Restart

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

Rated 4 out of 5 stars (9)
72 users

Birthday Reminder Requires Restart

Birthday Reminder reminds of upcoming birthdays for all contacts in Thunderbird's address book. Supports Lightning, reminders and even Google Calendar :-)

Rated 4 out of 5 stars (18)
8 users

More Snooze

This add allow to customize the snooze delay when snooze popup appears (lightning required).

Rated 5 out of 5 stars (10)
721 users

Simple Week View Requires Restart

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

Rated 3 out of 5 stars (5)
4 users

Add Birthdays To Calendar Requires Restart

Birthdays from addressbook-contacts will be added as events to Lightning...

Rated 3 out of 5 stars (20)
0 users

Repeat Borders Requires Restart

Adds darker borders to repeat events to distinguish them from single events.

Rated 4 out of 5 stars (1)
6 users