You want to make an email harvest or what? and then sell the whole bunch for some petty dollars. Why hide the program ? If its a good one, people will know about it soon. And who do u think will spam a site? Are you not well in your head??
I've found other ways of making money online as well (sites that have paid me). It includes reading emails, completing surveys, playing a game and completing free offers. Those interested can PM me for the info.