Added a Postal address switch to a news email's Sending band in Admin. On, the site's postal address is shown at the bottom of each copy after the link that turns product news off; off, it is left out. Emails written so far keep showing it, and a new email starts with the last email's choice.
Admin: choose whether a news email shows the postal address
A Postal address switch in a news email's Sending band shows or leaves out the site's postal address at the bottom of the email.