One third of email now spam
Analysts IDC reckons that spam represented 32 per cent of all email sent on an average day in North America in 2003, doubling from 2001. That figure is less than the 50 per cent or more junk mail statistic commonly cited by email-filtering firms like MessageLabs and Brightmail but it still represents a serious problem.
The effect of spam - measured in clogged inboxes, lost worker productivity and wasted IT resources - is measured in millions of dollars annually for larger organisations. Adding to this, three-quarters of the IT executives responding to an IDC survey feel the spam tsunami will only get worse over the next two years.
IDC surveyed 1,000 IT managers representing organizations of various sizes and industries in North America in developing its return on investment calculations. It also interviewed 30 senior IT executives representing a range of vertical industries in greater detail.