The Workplace Study: Email still rules workplace comms, but not for long Will instant messaging become the primary source of employee communication by 2020? By Robby Brumberg@robbybrumbergAug. 14, 2017 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.