What you want is at
www.seven.com
I use it to chk both my hotmail and gmail. You want the Consumer Editition. It is a mail client that can be set up to initialize a data connection between certain times such as 6am to 10am and after 10am it will disconnect. Ive never had any issue with it even though it is Beta. They do have thier own forums incase you need more answers or have issues.