First, email managed to survive massive upheavals in the way we use computers. In the early 1970s, when email was born, it was almost exclusively__ a tool for researchers, university students and engineers. You would send, receive and store your email on a work computer. With the rise__ of personal computers in the 1980s and90s, email became something you kept on your own private machines or disks - almost like storing old letters in a shoebox. Now we have come full circle. Most of us store our personal mail in the cloud, which is essentially__ like storing it on somebody else's work computer.