I would like to share my experience here. I worked in amazon local and had a great opportunity to mail him( anybody can do it : jeff@amazon.com). It was regarding an idea sparked on my mind to improve the customer satisfaction and customer UI experience of Amazon. 5 days later I received a mail stated that, Jeff liked your idea and expecting a deep write-up on this. I've got a doubt on this because I sent the ideas detaily with clear strategy. I've had a conversation with my ops manager afterwards and he said a team of 12 people working closer with Jeff and they're the team handling these emails. So if they like any email they'll forward to Jeff, otherwise trash it, use an appreciation blurb to the writer !