Yes. - "Contacts" are designed for clients you have that require emails to go to more than one person. For example if you are ordering from us on behalf of your company, you may require that invoices and billing notices go to one address in the billing department while product related emails go to the tech department.
"Contacts" makes this possible, with the ability to add an unlimited number of "contacts" to your account, and set individually per contact which emails they should receive.
"Contacts" are modified from within your "Manage My Details" area.