I don't subscribe, but I've given them my email a handful of times to receive free samples of books. (They're extremely generous with this. In a couple of cases

I don't subscribe, but I've given them my email a handful of times to receive free samples of books. (They're extremely generous with this. In a couple of cases, they sent easily half a book as a free sample.) My experience has been that they're on the low-volume end of the "we have your email" spectrum. Not nothing, but not hideous.