This option has been in NCM for years, but has never worked. I get e-mails every night telling me that all of our nodes' configs backed up correctly. While that's great, it's 1460 (4x per day * 365) extra e-mails a year I don't need on top of the countless others I receive that I do. Am I misunderstanding how this setting is supposed to work?
Others who have asked about this:
http://thwack.solarwinds.com/message/115420#115420
http://thwack.solarwinds.com/message/135885#135885