Sam has worked hard to minimize his bandwidth by turning off images in his email account. But it the image still flashes briefly, what gives? Leo says that what Sam has discovered is that while the email account isn't displaying the image, it's set to display your email as HTML, and that means it's still downloading them, and that can trigger a virus or exploit. What you need to do is use an email client that only downloads the ASCII text email and not display emails in HTML. That will prevent it. Thunderbird is free and is very good. Turn off HTML and image loading.