Your email solution used to be both your communication tool and document management solution. Everyone was sending messages and documents to everyone else and then just creating a nice neat (sometimes) folder structure to save the emails for future reference. For a while that was a tremendous improvement over phone calls, stacks of paper and filing cabinets.
Then came the demand for corporate wide information access and individual user email accounts were demoted and retention policies were implemented. The next dagger was the lack of encryption on standard email such that corporate information was therefore at risk. Possibly the final blow is that email became a spam fest. But wait, email is not dead and there are good reasons why.text