I am having problems understanding what I am doing wrong.  I have an object with a date field on it.  All I want, is when the date = today, it to send an email.

I set up a workflow rule and for the rule criteria set it to Formula Evaluates to True and my formula is Date__c = Today ().  For my action I have an email sent then. 

The problem is the email is never sent. I have to go and edit the record and change something for it to send.  Anyone know a fix for this??