Outlook default folder

Outlook default folder, what is that?

The primary folders of each mail box are called default folders. There is in each case one default folder for tasks, the calendar or contacts. The default folder is f. e. used to send own requests for an appointments. The most additional tools for Outlook are using primarily the default folder. The default folders are created automatically by starting and setting Outlook the first time. They cannot be changed easily without further actions.