In addition to the mail rules you define, you can easily block the mail sent to you by a selected sender. When you use the Block Mail from Sender rule, the messages from a selected person or e-mail address are designated junk mail, and are delivered directly to your Junk Mail view, instead of to your mail Inbox.
Note Messages already received by the person whose mail you are blocking remain in your Inbox. Only future messages are affected.
For information on adding or removing a person from a block sender mail rule, see Add or Remove a Person from the Block Sender Mail Rule.
You view block sender mail rules the same way you view other mail rules. From your Inbox, point to More and then click Mail Rules.
After you have created a block sender mail rule, the rule displays in the Mail Rules list with the condition "WHEN Sender or Internet Domain is in the Blocked Senders List" and the action "THEN move to folder Junk."
Using Quick Rules to Manage Mail