How can I send automatically generated messages?

I am using JotForm to recruit participants for a camp activity.  Participants are required to enter their email address and a parent's email address on the form.  I have two different messages that I want to send to participants immediately after they submit their form depending on whether a specific number of forms have been submitted. These messages will have to be sent electronically to both the participant's email address and parent's email address that they entered on the form.  Is this possible on JotForm? If it is, how do I go about setting it up?

Thank you.  This addresses one part of my problem and is very helpful.  The second part is how the system can identify whether a threshold has been reached, say 100 submitted forms, and then begin sending the 2nd email.  In effect, the 1st email will be sent to the first 100 participants, and then the 2nd email to subsequent participants. Can this process be automated or I need to manually keep track of the numbers?

Hi,

I thought this was possible using the submission counter widget:

http://widgets.jotform.com/widget/submissions_counter

And conditionally sent email notifications:

http://www.jotform.com/help/167-How-to-send-to-a-specific-email-address-based-on-a-selection

However, when I did some more testing, it is unfortunately not possible to run conditions based on the value in the submission counter widget.  From my testing, I have come to the conclusion that you would need to keep an eye on your submission count and change the notification when your count gets close to 100.