email notifying users of new blog

The email that goes out to subscribers/users announcing a new blog uses truncated introtext. However, any image embedded anywhere in the blog is added to the front of the introtext, breaking the blog formatting. It looks unprofessional and uninviting.

Is there a way to turn of these images, or ensure that only images in the introtext be included in the email.

I vaguely remember a setting somewhere in the past about including/excluding images in introtext. Unfortunately I'm not a good enough coder to mess with the post.new.php file!

Thanks,
Andrew