How can I force email programs to show images send in html email using php?

Question

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

Answer 1

I'm afraid not. The main reason email programs block images is because images are often used to 'report back' to whoever sent the email that the email has been opened. This is a common tactic used by spammers. Also, malicious code is often attached to images and downloading these images is how such code gets executed. Another reason email programs block images.