A Drag and drop feature is already announced by the Google and its got a good feedback .the first feature announced by Google is Drag and Drop attachment to your email and messages.
Yesterday google gave us new and useful feature to download files directly to desktop with dragging and dropping .So If you’re using Google Chrome, you can also drag attachments out of messages you receive to save them to your computer.
Let’s say you have an email open containing an attachment. Hover your mouse over the attachment’s “Download” link or its file icon and a tool tip appears that says: “Click to view OR drag to your desktop to save.”
Simply click and hold, then drag your cursor to anywhere in your file system that you want to save the file. Release the mouse button, and voila! Your attachment is saved (for large files, you may see a progress dialog).
Don't Miss Your Free eBook !!
Grab This Amazing eBook To Know About Recommended Plugins For WordPress Users