P website has collected poetic suggestions for where to deal with this view. There are many anti spam programs that identifies Spam and delivers it to the pre-approved offers folder.
Not absolutely all spam filters work in the same way. Many of them are pre programmed where in fact the know spammers are placed. They are accordingly blocked by them. The emails are filtered by some of the programs predicated on the key words found in the mails. Some of the email spam filters are configured and it can be easily customized by you or it can be also customized by the network administrator based on the requirement of the organization.