After a user submits a Request through Citizen Portal, a screen appears to thank the customer and provide a summary of the submission. This screen also includes a Send Email button that, when clicked, sends the summary to the user via email. The feature can even send the email summary to multiple addresses.
The captions for the Send Email button and the Additional Emails section can be customized through the Lucity Administration tool: System > Settings > Email tab (Email, http://help.lucity.com/webhelp/v150/admin/index.htm#26025.htm).