このオプションかな？

smartd.conf

-H -m [めあど]

-H
Check the SMART health status of the disk. If any Prefailure Attributes are less than or equal to their threshold values,
　　then disk failure is predicted in less than 24 hours, and a message at loglevel 'LOG_CRITICAL' will be logged to syslog.
　　[Please see the smartctl -H command-line option.]

-m ADD
Send a warning email to the email address ADD if the '-H', '-l', '-f', '-C', or '-O' Directives detect a failure or a new error,
　　 or if a SMART command to the disk fails. This Directive only works in conjunction with these other Directives
　　(or with the equivalent default '-a' Directive).


ちなみに、smartctl
-H, --health
Check: Ask the device to report its SMART health status or pending TapeAlert messages.
　　SMART status is based on information that it has gathered from online and offline tests,
　　which were used to determine/update its SMART vendor-specific Attribute values.
　　TapeAlert status is obtained by reading the TapeAlert log page.