Patrick Olson is correct, it's not possible to pull in the subject/email text. What you can do is run a search on the Sent Email List. Granted this will only be for ones that have actually fired, and I think it only goes back 90 days or so, but at least it's something where you can get the subject and body.
PPS, I always copy myself on all saved searches going out (and then filter them out into an archive folder with an email filter) so I can verify if they are actually working on not when someone comes around with an issue. I also always put some text in the body like "For concerns or questions around this search, please contact your NetSuite administrator(s) and reference the "New Account Alert" search." so that when someone shows me the email I know exactly what search to go to.