Freeware: GMail Drive Shell Extension

If you are looking for free online storage, consider GMail Drive shell extension. By using this useful utility, you will be able to make use the generous GMail storage size (6.7GB, as of this article written) to keep any file sizes not more than max. GMail attachment size (currently 20MB).

GMail Drive creates a virtual filesystem on top of your Google Gmail account and enables you to save and retrieve files stored on your GMail account directly from inside Windows Explorer. GMail Drive literally adds a new drive to your computer under the My Computer folder, where you can create new folders, copy and drag'n'drop files to. So, it will very convenience to use because you already familiar with Windows Explorer and its functionality.

For detail you can visit this website and download the setup file and install it when you think it is useful for you.