What is spam?

Spam is an advertisement massage sent to email without permission from the recipient. Most of the spam made for commercial advertisement are usually suspicious or presentations work to get money quickly or an illegal service. senders cost less to send. But the most of cost will fall mostly on the email recipient.
When you receive email had the title as " Make Money from Home" or "?XXX Hot SEXXXY Girls" from unknown people. Of course, you don't want to receive these emails, because it will make you to lost time ,costs, bandwidth and hardisk space for downloading these email to read although there is no way to get rid of these emails up to hundred percent. Purpose is most senders want to send goods or services ads of their companies. This is one type of spam that not only makes the recipient feel annoyed and time consuming to removal of these messages. In addition, spam still decreases the internet data transport efficiency . The other of spam from this  are Messenger spam. News Group spam, blogs spam and SM S. spam.