Thanks for this. Surely there is someway in the cart to delete an option selected. Maybe I didn't explain myself clearly.
1. What I require is the viewer be able to delete a property from the cart before it is sent to the email address incase they have changed their mind. Pretty much as most shopping carts out there.
2. The option that the user can only choose the property once. In effect, if they choose it again, the user is not prompted but it is physically not possible to add it twice, or alternatively tells the user that they have already added it, so they can't add it again.