This will mark the sender as a spammer, and all subsequent messages will be diverted to your spam folder. [substeps] Most web mail clients (like google mail, yahoo! Mail, outlook, and more) already have built-in spam filters that automatically move spam to your account's spam folder.
[header] How to reduce email [title] Teach your email to recognize spam. [step] Mark messages as spam to have them automatically filtered out of your inbox in the future. When you receive spam, select the message and mark it as spam.