Microsoft is gradually enabling Hotmail push email support for a wide range of phones including the iPhone, Windows Phone devices and Android, by enabling Exchange ActiveSync support to nearly 300 million phones. With push email you can sychronize email between your phone and the web, and also synchronize calendar and contacts.
"Microsoft says it's introducing the support for ActiveSync slowly. In a message to some users attempting to access the service, the software giant explains they've had capacity issues. "To get Hotmail on-the-go, you recently tried to set up a service called ActiveSync from your mobile device. We're really glad that you're interested, but we had so many sign-ups that we had to temporarily stop accepting new ones."
To see if your account is enabled you can select Exchange option from your mobile and point the server address to m.hotmail.com