You can set up Outlook Express to automatically move messages sent to you from specific email addresses to your Deleted Items folder so that they are basically deleted on being downloaded without being read by anyone.

You can block messages from a particular sender or domain. The domain is the name following the @ symbol in an e-mail address.

When you block a sender or domain, no e-mail or news message from that sender or domain will arrive in your Inbox or in the news messages you read. E-mail from blocked senders goes directly into your Deleted Items folder. Newsgroup messages from blocked senders are not displayed.

From your e-mail Inbox or the list of messages in a newsgroup, select a message from a sender you want to block.

On the Message menu in Outlook Express click Block Sender.

Blocking a sender applies to standard POP e-mail only. It does not apply to HTTP e-mail or IMAP messages.

To remove a sender or domain from the Blocked Senders list, on the Tools menu, point to Message Rules, and then click Blocked Senders List. Select the sender or domain, and then click Remove.