It is so fashionable today to criticize email as a productivity drain, that it is fascinating when someone exalts its benefits as a productivity booster. And it does have its benefits. Mark Cuban unashamedly stating his love of it reminded me of Dave Girouard’s 2013 column “In Defense of Email.” There are ways to do email better, yes (not replying with just a “thank you” is one), but many of us would be much less productive in our jobs without it.