If you send it as attachment it'll come over as attachment not as a part of the message body itself. It may or may not be possible achive what you want depending on how you send email.

>I have a report that is rendered to html, then sent by mail. When i browse to the html file where it's been generated, i see the logo displayed correctly, but when i send the mail, it misses the logo file. Is it enough for me to attach the jpg file in the same email?