Want a way to only allow emails from people on a list to get through to your inbox and send the others somewhere to be sorted out? From there you can have them deleted, moved to a different folder, or even, not receive them at all. This can be done with an often overlooked button in Outlook Express Message Rules.

Porceedure
Select Message Rules option from the Tools Menu.
Then select "Mail".

Next, click the "New" button.

Option 1 - Conditions check the box next to "Where the From line contains people."

Option 3 Rule Description next. Click on "contains people" and on the following menu, press the Address Book button.

After you have added all the people you wish to allow email from on this account, press OK to close the address book. Possibly it will be your complete address book that have Email addresses. Remember ,if you do any shopping online, you might miss out on email from customer service. The address you send to is not always the address that responds. You could just add the domain, if it is a dedicated domain (like amazon.com easyjet.com and any sites that send you newsletters), then if you get any emails from them regarding an order, they will not be filtered.
Then, press the "Options" button.

Select the radio button next to "Message does not contain the people below."
Close this dialog box by pressing OK and do the same with the "Select People" dialog box.
Finally, you need to decide what Actions (Option 2) you want to take with the unwanted email. Scroll through the Actions and check the box next to those that suit your needs.

Most users will check the box next to "Delete" it. This places the unwanted mail into your Deleted Folder. But it would be wiser to create a special folder called "Quarantine" and send filtered mail there so you can check to see if anyone you know that you forgot to put on your list tried to send you an email.
Press OK to close the dialog boxes and have your new message rule work for you. You can click on the "Message Rule #" and rename it something like "whitelist" so you know what it is.
This is a free way to eliminate the unwanted email that ends up in your Inbox every day!
Once you've got your list created, you'll probably go about your business checking your e-mail and thinking how wonderful it is to not have to deal with all that spam. Well, that is until you take a look through your "spam" folder and you realize that a few of the messages you would normally accept got stuck in the trash. If you forgot to add a couple e-mail addresses to your whitelist, it's no problem. It's very easy to add another one in. Here's how you do it.
In Outlook Express, go to Tools, Message Rules, Mail and find the whitelist rule you have created. Under the Rule Description area, you will see all of the e-mail addresses you have added to your list. Click on any one of those and new box will appear. Go ahead and type the new address you want to allow in the open box and click Add. That will automatically add that particular address to your whitelist and you will be able to receive e-mails from them.
Click OK twice to finish.