Problem of spam has increased
Spam has increased steadily over the last years, in accordance to Brightmail. Today, March 2004, 62% of all emails on the internet is spam compared to 45% a year ago. The major problem of spam is that it’s the receiver that is paying for the spam in terms of their time and bandwidth. This can be very costly, imagine a small company of 20 persons, each person is receiving 20 spam e-mails every day. Each person spends 5 seconds on every spam to classify and remove it. Everyday the company will spend about half an hour to separate spam from legitimate e-mail. By experience, 20 spam per day is very low for a company that is susceptible for spam. Other problems of spam are offensive spam such as those with pornographic content, crashed mail servers, lost personal e-mails and the general psychological annoyance.
