Images do not reside in a HTML file. It contains coding that points to the image so that it can be displayed on the page. The image is a separate file.
example - [img]imagefilename.jpg[/img]
My suggestion is to copy and paste the doc file into your email. If the image file is too large, reduce the size of the image using Photo Shop, Paint Shop Pro, Photo Impact or other photo processing software that will optimize images for display on a monitor. Swap the optimized image for the original then copy and paste the word file to your email client.
Bookmarks