Dell PowerConnect W Clearpass 100 Software 3.9 Deployment Guide - Page 311

Email receipts may be sent manually by clicking the Send email receipt link displayed on the guest account receipt page. When using guest self-registration, the Email Delivery options available for the receipt page actions allow you to specify the email subject line, the print template and email format, and other fields relevant to email delivery. These options under Enabled are available to control email delivery:  Disable sending guest receipts by email - Email receipts are never sent for a guest registration.  Always auto-send guest receipts by email - An email receipt is always generated using the selected options, and will be sent to the visitor's email address.  Auto-send guest receipts by email with a special field set - If the Auto-Send Field is set to a non- empty string or a non-zero value, an email receipt will be generated and sent to the visitor's email address. The auto-send field can be used to create an "opt-in" facility for guests. Use a check box for the auto_send_sms field and add it to the create_user form, or a guest self-registration instance, and SMS messages will be sent to the specified phone number only if the check box has been selected.  Display a link enabling a guest receipt via email - A link is displayed on the receipt page; if the visitor clicks this link, an email receipt will be generated and sent to the visitor's email address.  Send an email to a list of fixed addresses - An email receipt is always generated using the selected options, and will be sent only to the list of email addresses specified in the "Copies To" field. ClearPass Guest 3.9 | Deployment Guide Guest Management | 311