hahahahaha
i read how that won't work in a book about con games.
6 x 6 x 6 x 6 x 6 x 6 x 6 etc
assuming that only 1/20 of the american pop is on mailing lists, that is about 10 million people. so by the 9th run, 10 million people will have gotten one. so unless you started the idea, it has been saturated to death.