How do I use an HTML file as the body of a message?

You can use an HTML file as the body of your message. This can be convenient if you already have an HTML saved on your hard drive.

Important: Many HTML files make use of CSS, JavaScript, and Flash to provide extra style or interactivity. These technologies may not be supported by most email clients, so if you send a page that includes them, there is a good chance the email will not display correctly in the recipient's email program.