Emails: Schedule autoresponder & verfiy it was sent

I cannot tell if my scheduled auto-responder email sent.  
Is there any way to tell if people received it?

Thanks!!

You can check it in your email history. Here's how: http://www.jotform.com/help/293-How-to-view-all-your-form-Email-History

Thank you!  So it turns out the email didn't send.  I went ahead and rescheduled it for tomorrow.  How can I tell if it will actually send?

Your autoresponder needs a submission to activate the schedule. I don't believe it will work for existing submissions. 

You can check if it was sent in your email history:

How-to-view-all-your-form-Email-History