Create a rule (filter) from a template or from scratch/Set up an e-mail filter

In the Navigation Pane (Navigation Pane: The column on the left side of the Outlook window), click Mail.
On the Tools menu, click Rules and Alerts.
If you have more than one e-mail account, in the Apply changes to this folder list, click the Inbox you want.
Click New Rule.
Choose one of the following:
Use a template with pre-specified actions and conditions
• Select the template to use.
Create the rule by specifying your own conditions, actions, and exceptions
• Click Start from a blank rule, and then click Next.
• Under Select when messages should be checked, select Check messages when they arrive or Check messages after sending, and then click Next.
• Follow the rest of the instructions in the Rules Wizard.
If you want to run this rule on messages already in one of your folders, select the Run this rule now on messages already in "folder" check box on the last page of the Rules Wizard.
To have this rule apply to all your e-mail accounts and Inboxes, select the Create this rule on all accounts check box on the last page of the Rules Wizard.

Run a rule (filter) periodically but not all the time:

On the Rules and Alerts dialog box, turn the rule off by clearing the check box next to the rule.
Click Run Rules Now.
In the Run Rules Now dialog box, under Select rules to run, select the check box next to the rule you want to run.
Select the folder that you want to apply the rule to.
Select the category of messages that you want to apply the rule to.
For example, you can apply the rule only to unread messages in a folder.
Click Run Now.

Create a rule (filter) based on a message in a folder

Open the folder that contains the message.
Right-click the message on which you want to base a rule.
Click Create Rule.
In the Create Rule dialog box, select the conditions and actions you want to apply.
To add more conditions, actions, or exceptions to the rule, click Advanced Options, and then follow the rest of the instructions in the Rules Wizard.
To run the rule as soon as you have created it, select the Run this rule now on the messages already in "folder" check box on the last page of the Rules Wizard.

Create a rule based on a message you are composing

Add a recipient or type a subject for the message.
Click Create Rule.
In the Create Rule dialog box, select the conditions and actions you want to apply.
To add more conditions, actions, or exceptions to the rule, click Advanced Options, and then follow the rest of the instructions in the Rules Wizard.