Spam is simply unwanted, unsolicited mail sent to your Mail Box.
It started to become a serious problem when the Internet was opened up to the general public in the mid-1990s and it’s considered as the abuse of electronic messaging systems to send unsolicited bulk messages. Today spamming is prevalent on the Internet because the transactions cost of electronic communications are radically less than any optional form of communication. Spam continuously spread to new forms of electronic communication as the benefits increases to levels where the calculation “cost/benefit” gives positive results.Because the barrier to entry is so low, spammers are numerous, and the amount of unsolicited mail spreading especially online has become very high. Since spam is, by definition, unsolicited, this address harvesting is done without the permission and sometimes even against the expressed will of the address owners.Another problem is that being aware of eventual legal problems, they take advantage of this fact, and frequently move a part of their operations to countries where spamming will not get them in trouble. Spam has become major problem worldwide, since the...