Mozilla Lightning 1.9

Lightning brings the Sunbird calendar to the popular email client, Mozilla Thunderbird.

Since it's an extension, Lightning is tightly integrated with Thunderbird, allowing it to easily perform email-related calendaring tasks.

Support the Lightning Team

Please support our efforts by donating to the Calendar Project.

Licensing:

Lightning is licensed under the MPL/GPL/LGPL triple license, allowing use of the files under the terms of any one of the Mozilla Public License, the GNU General Public License, or the GNU Lesser General Public License.

System Requirements:

Lightning 1.2 is compatible with Thunderbird 8 and SeaMonkey 2.5.

Lightning requires slightly more processing power and memory than the equivalent version of Thunderbird. Please check the Thunderbird or Seamonkey release notes for more details.

Downloading and Installing:

Before installing, make sure your computer meets the system requirements. Mozilla.org provides Lightning for Windows, Linux and Mac OS X in a variety of languages. Windows users must have Windows XP or later.

IMPORTANT: Install the updated timezones for Windows XP or later. Information on obtaining the updated timezones can be found in Microsoft Knowledge Base article 955839. Not updating your Windows timezones will result in unreliable and erroneous display and entry of time data! Be sure to do this.

What's New:

Lightning 1.2 is the latest release of our calendar extension for Mozilla Thunderbird®. We recommend that all users upgrade to this latest version.

The most important bugfixes in this release are:

• Full offline support, when the "Cache" is enabled for a calendar
• Improve diagnostics for the ICS provider
• Fix the top startup crash. Please give Lightning another try if you previously had issues
• Some fixes for the alarm system, specifically related to snoozing and recurring events
• Allow opening events already accepted via invitation
• Fresh new UI style for all calendar views