It can notify new mails in different styles – as a classic message box, a popup balloon and as a transparent animated form. The transparent option is fully customizable. You can choose any color as background, font style and size, width and height of the message box and transparency.
As said above the program is fully customizable and portable. Just download, unzip in a folder and run the program. Give your Gmail address and password, choose an option for notifying new mail from ‘notify with’ option.
Choose an option from ‘Browse Inbox with’ for reading your message. Select ‘Default browser’ for opening your mail in browser, ‘Default mail client’ (for open in Outlook/ Outlook Express), or ‘Other’ for other mail client like Thunderbird.
Uninstall: open the settings panel and click on the "Clear Settings" button to remove settings from the registry and delete the Gdow's folder. Download Gdow from here.