Make a cPanel accont email only?

HI Members I have a client who wants to change his account from domain and email hosting to email only hosting, now i can delete his website from the file manager but if i do that when some one goes to his domain they will see the default contents of the public HTML folder. is there a way i can set it up that if they go to his domain they get a blank page, or a no website page or anything, i have full access to the whm portal and full access to the domain record thanks in advance J