This method, referred to as flagging a message for follow-up, adds the message to your task lists with the default due date specified in the Quick Click settings, and adds an information bar to the message. In the Mail pane, click the flag icon to the right of a message. To transfer an email message to your task list without creating an individual task

The task window that opens contains the information from the original item.

To create a task from an email message, contact record, or noteДrag the message, contact record, or note to the Tasks button on the Navigation Bar. In the Tasks peek, enter the task description in the Type a new task box. On the Home tab, in the New group, in the New Items list, click Task. When displaying the Tasks List view of the Tasks module, enter the task description in the Click here to add a new Task box, press Tab to move to subsequent fields, fill in other information, and then press Enter. When displaying the To-Do List view of the Tasks module, enter the task description in the Type a new task box, and then press Enter to create a task with the default settings. Enter the task details in the task window that opens, and then save and close the task. On the Home tab, in the New group, click New Task. You can schedule specific time to complete a task by dragging it from the Tasks area to your calendar. When viewing your calendar in Day, Work Week, or Week view, each item on your Outlook task list appears in the Tasks section below its due date.

Create task in outlook and assign