Gmail File System. Is it safe using softwares like Gmail Drive and GmailFS to use gmail as online storage medium. Share your views about gmaildrive here... Read below to know whats gmail drive:- GMail Drive is a Shell Namespace Extension that creates a virtual drive in the Windows Explorer, allowing you to use your Google GMail account as a storage medium. It allows you to do basic file manipulation, such as copy and delete of files inside the GMail account. Because it is a Shell Extension, the interface you work in is Windows Explorer itself. GMail Drive appears as a virtual drive under your My Computer folder in Windows Explorer. How It Works:- GMail Drive works by directly manipulating emails inside your Google GMail account. When you copy a file to the GMail Drive folder, it internally creates and sends an e-mail to your account. The file content is sent as an e-amail attachment. When the Shell Extension needs to display a directory listing of your GMail account, it submits a GMail search query using the sparsely documented GMail Protocol API. It searches for all e-mails starting with the word "GMAILFS". From the returned search result, it builds a directory structure, which is displayed in the Shell Extension. Because all GMail Drive files appear as regular e-mails in your Google GMail account, you may want to set up a GMail filter that automatically moves all e-mails containing "GMAILFS" to the archived folder. This way, GMail Drive files won't clutter up your GMail account. A typical GMail File looks like this inside your GMail account: GMAILFS: /folder/filename.txt [123;n;1] You can find the actual file content inside each mail as an e-mail attachment. The file size is limited to 10 Mb because this is the attachment size limit Google imposes on all mails. Since the filename must be available on the message subject line, the full filename length is limited to 40 characters.