Email, Messaging, & Video Calls Email How to Send Spam to the Spam Folder in Yahoo Mail Even Yahoo Mail's strong spam filter doesn't catch everything By Heinz Tschabitscher Writer A former freelance contributor who has reviewed hundreds of email programs and services since 1997. our editorial process Heinz Tschabitscher Updated November 22, 2019 Email Yahoo! Mail Gmail Tweet Share Email Yahoo Mail has an effective filtering system that sorts out the majority of unsolicited bulk emails before you receive them at your Yahoo Mail account, but some make it through. Here's how to handle unsolicited bulk mail that appears in your Yahoo Mail Inbox. How to Send a Lot of Emails to Spam: Yahoo Mail Manually mark any spam that makes it to your inbox. This moves the email to a separate folder and gives Yahoo information it can use to fine-tune its filtering system for future emails. Log in to your Yahoo Mail account and go to the Inbox. Select the check boxes next to the email messages you want to mark as spam. Go to the toolbar and select Spam. The email messages move to the Spam folder and the senders are noted as spammers. In addition, the contents of the email messages you mark as spam helps Yahoo Mail filter more junk mail out of your inbox in the future. If you change your mind or inadvertently mark email from a trusted sender as spam, go to the Spam folder, select the check box next to the email message, then select Not Spam. If the email is particularly spammy or you manually marked it as spam in the past but are still receiving it, open the email, select Spam in the row of action icons above the email field, then select Report Spam. The email is moved to the Spam folder, and Yahoo Mail is notified. No other action is necessary. How to Avoid Spam Despite Yahoo's best efforts, spam can sneak through. There are a few things you can do to reduce the amount of spam you receive. Don't reply to senders you don't know.Don't freely give out your personal email.Don't reply to spammy emails and ask to be removed. That tells the sender a real person opened the email.Use an email alias when online shopping, so you can easily identify retail spam when it arrives.