ScarletMail accounts are required to use the NetID as the account name, so it is not possible. However, you can set up a personalized email address, or mail alias, in the form of “firstname.lastname@rutgers.edu”, and set ScarletMail (or most preferred mail programs) to send using that address in the From line, rather than the netid@scarletmail.rutgers.edu address. Visit the article on setting up ScarletMail to use your official Rutgers email address for more details.