By the way, most reviewers, if the email catches their interest, will want press information available on your site, logo ideas, pictures, videos, something. They also WANT your contact info. Once you contact them, don't be afraid to post a phone number or email online for them to reach you. I've heard of a situation where a popular game reviewer had come across a site about an indie game in development. He liked what he saw, but on their site, they had NO contact info, no email, no phone number. After about 5 minutes of trying to figure out how to reach them, he gave up, their loss.
When I said Demo Ready, I meant that you have something playable, that really helps show the fun, or the graphics, or something really catchy about your game. It doesn't need to be publicly available, but offer to send them a partial demo. If they like what they see, they are often willing to go through a few hoops to install something, I.e. install this SDK, then run the exe for your game after copying it to this folder. It doesn't need to be a complete installer. But try to keep the hoops low. They want good stories don't make it hard for them.