We would like the ability to have an email address field for the shipping address so that when an order is dispatched the invoice gets emailed to the billing address and the dispatch and tracking notifications get emailed to the shipping contact. As we are a wholesale business more often than not the billing address contact is the Accounts person for the business and doesn't need to know the item has been shipped. They only generally need the invoice. The person that requires the tracking notification is the person receiving the item which generally means they only need to know the item has been dispatched and they can track it. For example we have customers that have multiple authorised purchasers/shipping contacts so rather than the Billing/Accounts person receiving all correspondence and having to forward the details on to the relevant shipping contact it would be a perfect solution to only email what is required to each contact.