How to Send Auto Message using JotForm base on Date

My question is, Today's date is 03-Jan-2016 and interview date is  6-Jan-2016. Then jotform send auto popup msg to the person who update the interview date field. The auto popup msg should send on 6th Jan'16.

Unfortunately jotform does not support the sending of scheduled notifications/emails.

However you can leverage existing CRM software to send the scheduled message, consider taking a look at ZOHO CRM.

http://apps.jotform.com/app/zoho_crm_integration

http://www.zoho.com/crm/help/miscellaneous/set-up-autoresponders.html