Research reveals email dominates business communication but poor processes kill productivity and frustrate employees Posted Jan 07, 2021 Mail Manager research finds 32% of employees spend nearly one working day per week managing inboxes 7th January 2021: Email remains easily the most-used and most important communication tool but a lack of email management is having a major impact on business productivity. These are the findings of research revealed today by Mail Manager, a leading email management solution and part of the Arup Group, a global multinational professional services firm, which surveyed more than 1,000 decision-makers from organisations in the United Kingdom and the United States.