Rule to display mail from somebody
Use the following steps to create this rule:
1. Select Tools -> Rules and Alerts... to display the Rules and Alerts dialog box.
2. In the Rules and Alerts dialog box, choose New Rule....
3. Choose the Display mail from someone in the New Item Alert Window option, click Next.
5. Choose the address of your boss (for example) and then click Next to choose your action.
Enter the text in the Alert Message dialog box, click OK and click Next.
7. You probably don't want any exceptions, so click Next again, name your rule, and click Finish.