A spam message can be defined as unsolicited email.
Most Internet sites forbid spamming as it is generally regarded as unethical.
Some Internet sites will go so far as to stop all email from any site that allows spamming. This can have the side effect of also preventing some legitimate email from getting through. As a result of increasing restrictions, spammers have begun to set up their own Internet sites that cater to, or encourage, spamming. The spammer s goal is to get around filtering methods. The second of these methods is often used without the knowledge or permission of the third party.