With annual business email volumes worldwide in excess of 1 exabytes for the first time last year ( 1 exabyte = 1 thousand petabytes = 1 million terabytes = 1 billion gigabytes), and the need to comply with email retention dictated by government and industry regulations and business requirements, the cost of storing and managing email throughout its life-cycle is increasing.
Robert Mahowald, research manager for IDC's collaborative computing service added, "Email is frequently the point of entry for spam, viruses, and other IT headaches, and users often struggle to keep up with mail overload, regulatory compliance, and inbox management. Add to that the fact that more email-capable mobile devices mean increased mail volume and mailbox synchronization and management. These new threats - and opportunities - for the future of the inbox mean that email proponents will need to find ways to improve its security and flexibility without sacrificing its usefulness."
Mark Levitt, research vice president for IDC's collaborative computing service, concludes that "Email users and IT staff are finding ways to deal with spam more effectively."
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