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).
-n
Disable mail notification. -n
is used alone.
-y
Enable mail notification.