With $1M, I guess I would modify my marketing plan a bit. The email thing is a bit suspicious, but there is no doubt that email marketing is a powerful tool, assuming you aren’t sending worthless information to users. If you have content writers, then I would assume the content is something decent.
But, if I had $1M to spend, I would have to look at some traditional mediums, print advertising to start with. So maybe 5% on the email marketing, 55% in traditional mediums and 45% on SEO.