Nothing happens, no address to send the email to. If you want to ensure that users fill in the "Email" field attached to the Email Reciepts setting set the field as "Required" so they cannot leave it blank.
The problem is that we have two versions of an application, in Spanish and English, combined into one form. So there are two fields that applicants could be putting their emails into. The email receipts are pulling from the English version of the form. I was curious what was happening to the responses for forms filled out in Spanish.
You answered that. Thanks!