Many users think that Thunderbird would be perfect if it included organizer functions. But, if you don't want to renounce to Thunderbird, Mozilla offers the solution: complement your favorite email manager with the elegant Lightning add-on.
Lightning is an extension, based on the Mozilla Sunbird application, that allows you to integrate the calendar, organizer and task manager into your favorite email manager, Thunderbird. The installation is carried out from the email manager itself. We will only have to open the Tools menu, then go to complements, and press "Install" where we will have to indicate where it can find the extension.
Add new functions and complement Thunderbird, thanks to Mozilla Lightning!