Confirmation email

I have created an application for jobs to our university. I have completed 2 scripts for email confirmations, one is "on load" the other is "on success".
When I apply for a job using the application, I am not receiving a confirmation email back even though I have completed 2 scripts. Could you tell me:
1- How quickly is the confirmation email suppose to be generated
2- Am I doing something wrong? Is there another place in Zoho that I am supposed to complete to make sure that the person applying for a job gets a confirmation email?

Please let me know ASAP, we will be opening the application in 1 week, I have been working on this problem for 1 month
Thanks
Kim