I used to use english Eudora but switched to Outlook Express to get UNICODE working so I could read my Japanese mail. Eudora had an option "Don't download HTML graphics" so you could stop validating your address to those m**f***er spammers. But it seems Outlook Express can't do this, there's no way to preview the message without getting the html to download.
Does anyone know an alternative email client that can do Unicode properly and is more secure than Outlook Express? Or a way to turn off the loading of spam html in Outlook? Drives me nuts. I was happy with Eudora, it had the bonus that I could ignore all official Japanese mail from work ; )