Add-ons
Calendar and Date/Time
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Show Outlook Appointments (vcal / ics)
Requires Restart
An extension to show embedded Outlook calendar (vcal / ics) parts.
Thunderbird doesn't show calendar parts from Outlook appointment emails. This addon adds a button to download the embedded appointment as ICS to import it into another calendar.
lightningWeather
Requires Restart
LightningWeather shows the weather forecast in the background of the calendar so you can easily coordinate your activities with the weather.
Multimonth view
Multimonth View allows users to display multiple months in a single calendar view,
Enhanced Date Formatter
Requires Restart
Configure the 'Date' and 'Received' columns and displayed date in the message pane using custom formats. You can even use different date formats for emails with today's date, yesterday's date, dates in the last week, or dates older than a week.
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!
AdvancedTasks
Requires Restart
Thunderbirds Lightning Extension: Allows the use of Markdown in Task descriptions and renders them as HTML in the TaskView.
Simple Week View
Montezooma
Requires Restart
Montezooma is a Thunderbird Addon that adds zooming functionality to windows.
ElsHelp
Reply Monitor
Requires Restart
**This is NOT COMPATIBLE with Thunderbird 31 or newer versions**
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.
Task Me (activity logger)
Requires Restart
Activity logger (sampled task monitoring) which uses calendar to store user's activities.
It periodically displays window with textbox where user can put description of currently performed tasks. The description is saved in a calendar.
Show Calendar Week
Requires Restart
Shows the calendar week Thunderbird/Lightning calendar's moth and multi-week view.
MiniWebView Sidebar
Requires Restart
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.
DM Sync
Requires Restart
This plugin allows you to synchronize addressbooks and contacts stored on the DM mail server
Date on Thunderbird
Iranian Date For Thunderbird
Requires Restart
Adds a new Iranian(Persian/Jalali) date column to Thunderbird.
NirvanaHQ
StormCows
Requires Restart
Allows two-way access between Remember The Milk and calendar events or todo items.
SanRockstarTo create your own collections, you must have a Mozilla Add-ons account.
