notify [options]Inform user when new mail arrives. With no options, indicate whether automatic notification is enabled or disabled.
Note: this command is part of the UPAS mailing system software. Commercial Unix systems all use sendmail, thus, this command isn't applicable.
-m fileSave mail messages to file (default is $HOME/.mailfile). Applies only when automatic notification is enabled (-y option).
-nDisable mail notification. -n is used alone.
-yEnable mail notification.