One British company is going to find out.
The company's owner, John Cauldwell, was quoted in numerous U.K. publications as saying that E-mail had become an insidious productivity drain. He estimated that banning internal E-mail communication would save employees as much as three hours a day and that the company would save 1 million pounds a month. The move, he said, was having an immediate and dramatic impact.
The article notes that Cauldwell doesn't use email himself. I can't wait to see how this turns out.
