Can I set up automatic reply to emails who register on my site for direct JotForm?

Hi,

These are our guides on setting up email notifications.  The first is on setting up notifications sent to you:

http://www.jotform.com/help/25-Setting-Up-Email-Notifications

The second is how to setup responses to your users:

http://www.jotform.com/help/26-Creating-a-Form-Autoresponder

In your case, you would be using the autoresponder to send emails to the users filling out your form.

If you have any further questions, let us know and we will be happy to help.