There's still no sign of a Gmail app for the Kindle Fire, so here's your consolation prize — Microsoft has released a free Hotmail app to the Amazon Appstore. While a Hotmail app for Android is nothing new, with over 3 million users, Microsoft says it's tweaked the app for a smooth Fire experience. It's also claiming advantages over the native POP3 email client, with Exchange Active Sync grabbing contacts and folders with your mail. The move makes sense — the Kindle Fire's native mail client doesn't support Exchange Active Sync in the same way that 12 million users enjoy on iOS, so a dedicated app could provide a much better experience for those on Hotmail.