Design a Web site with a home page, 5 pages containing forms, 5 pages with info for each of those forms, a common response page for forms not completee correctly, and a common response page for forms which are accepted.
When a form is accepted, if an email address is provided, send an email to this address. if the email bounces, send a page back to the user telling him the email address given is invalid. Set a field on the form to indicate that the email is not valid.
Store the information from the forms in a common .csv file.
Allow the site owner to download the csv file from time to time.