The author of a book about stringing along email scammers thinks we should all have a go. Spam mails come from a wide variety of sources and usually fall into a few distinct categories: Phishing, Malware, Botnet, blackmail, credential theft or some other horrible thing. 419 Youve won the lottery / a mysterious sum of money is owed to you / a spaceman is trapped in orbit and needs your help. 419 419 These mails are a fast track to becoming a money mule if youre not careful.”]
Source: https://blog.malwarebytes.com/cybercrime/2015/09/reply-to-scammers-they-said-itll-be-fun-they-said/