Spamming has now become one of the biggest issues now a day on the internet. It’s getting increasing day by day as the internet gives us freedom to post anything on it. Everyone should use the internet for spreading and gaining knowledge, not to spread spamming. The same thing happens on yahoo also as spammers send emails to many yahoo users which can contain malware, misleading data etc. and by using that they can get money. Yahoo is one step ahead of these spammers as it gives the privilege to yahoo mail users to report against these spam emails and once it is reported, yahoo takes action against it and you’ll never get these spam emails back on yahoo. You can report against these emails here: http://help.yahoo.com/l/us/yahoo/mail/ymail/spam.html To know how to report, you can go through the presentation or ppt to block these spam emails. I hope it will help you. For more details, user can visit here: http://www.yahoosupportnumber.net/blog/how-to-report-spam-in-yahoo-mail/