I have smart host configured to send the email to my personal gmail account and selecting 'always send a copy to bcc'. I get all relevant notifications; such as this morning the freshclam log failed to rotate due to a locked process. freshclam was updated yesterday on both my servers. I corrected one yesterday and fixed the other after receiving the email this morning.
Though in my setup, I don't use NS as a mail server. Mail is only configured to send messages based on errors that require my attention. Otherwise the system runs without any issues.