Customer email contacts are set up the same way as other contacts with the exception of the contact type. The contact type must be the same type as in the Email Defaults on the PS Options Menu. The Email Defaults contains a TOP program name and a contact type.
For example, program ARSF40 is the statement print program and may have AP as the contact type. Your email contact would contain the same type in order to email statements to the email address contained in the contact record.