Lightning (calendar extension)

Lightning is a free extension for Mozilla Thunderbird that adds calendar and scheduling capabilities. It allows users to create, view, and manage events, appointments, and tasks directly within their email application. With Lightning, you can organize your schedule, set reminders, and share calendars with others, all integrated seamlessly alongside your emails. It supports multiple calendar formats and syncs with popular services like Google Calendar and Microsoft Exchange, making it easier to keep your plans coordinated across different platforms. Overall, Lightning transforms Thunderbird into a comprehensive personal organizer, combining email and calendar management in one application.