What I do with the data
This page is only for testing purposes. In the first place, please use a secondary email address and avoid entering any "real" data sensitive to you, unless you don't mind.
When you enter your email address in the admin backend, test bookings will be sent to that email address and that email address will also be used as the "reply-to" emailaddress in the test confirmation email sent to the booking user.
I will delete the data when enough testing is done, assumably within a month's time as of time of writing and reading this.