We prefer to have all our HR data in all caps. Under PS\CA\SE\PS\CF\AU\ES, we can set the Default Email Format, but the part before the @ symbol is always lower-case. Please provide the option for the field to be Upper case, or let it use the case of the fields chosen (for example, we choose to use the First.Last in the email address, and even though the First and Last name fields are typed in all upper case, the Default Email Format pulls it in as lower-case).