Comment Spammers cannot afford $0.10 per 1000 emails (Score 5, Interesting) 71
The response rate for spam is very low (1 in 12.5 million according to http://www.techradar.com/news/computing/spammers-get-1-response-to-12-500-000-emails-483381?src=rss&attr=all), so a spammer would have to pay 12.5M / 1K * $0.10 = $1,250 to get a response by paying Amazon to send emails. Multiple responses will be required to make a sale. If they can't make $1,250 of profit per response, they can't make money by using Amazon to send their spam.