I have created a work flow rule on opportunities that sends an email notification everytime a opportunity has been created or edited. However, is there a way to have the flow rule work send an email notificiation only when a new opportunity has been created or when the stage has been changed? 

 

Sometimes the stage can go back to previous stage so the option "When a record is created, or when a record is edited and did not previously meet the rule criteria" would not work for me. I don't want an email sent everytime an edit has been done.