Many users got fright by looking to their gmail account because of blank inbox and a ‘Welcome to Gmail’ message awaiting them when they logged in. Google estimated that approximately 500,000 Gmail accounts were reset and many users losing their entire cache of mails, chats, and attachments.
Google started to work immediately and promised users to restore all mail accounts very soon. If your gmail account is reset then you can ask for restoration from Gmail Help Forum.
Today's app status can be seen here.
