Thanks guys for your support and suggestions. Few more functionalities have been added to Gmail Notifier from feature requests.
First of them is moving pop up screen to a desired screen so that i won't appear in the right bottom corner all the time.You just need to click on the "move" button and drag notifier to a different position and it will automatically show up next time on new location.
There is an option in "Options" window to set it back to default location.
Second: Transparency option have been added to notifier to make it look more neat and clean. You can set transparency level from "Options".
Third : Now, If you click on email summary of notifier. It will open up that email conversation straight into your default browser providing that you have saved your Google Apps username and password in the browser.
Old customers can download the setup file again and install this version.
All previous licenses should work. In case of any problems please let me know.