I am sending an html email with php and it includes an image. Some email programs, such as gMail have a \'display images\' button. The user has to click on that in order for
You can, but unfortunatley Trident, which is the IE rendering engine doesn't support it (surprise, surprise), but it is technically possible to include images in the html itself - see http://en.wikipedia.org/wiki/Data_URI_scheme