. The mail program uses several files. They are: . /usr/spoMail.rc . The global start-up file from which the mail program gets its default values. ~ username /.mailrc . A personal start-up file in your home directory . You have to create this file and its contents. ~ username /mbox . The file in your home directory where your mail is stored once it has been read. ~ username /dead.letter . The file in your home directory where any mail message that you decide not to send is stored.