If you do not want your recipients to view or have access to the addresses of
others, you must use the BCC field. The main reason being that even when only
the name is displayed, the recipients can simply right-click on the name and
select Properties to reveal its address.
You cannot send e-mail using a name only. Whether the e-mail address is shown or
not depends on either the recipient's client app, the results of which are
maintained in a cache on your system when you reply, or if you use the contact
list when composing, in some cases it can be formatted from the contact file of
certain e-mail applications (I don't believe that Windows Mail is one of them),
but as I mentioned previously, the e-mail address will still be viewable