Recently, a friend asked me how to automatically load a Powerpoint presentation when you open an email in Outlook. While I have never tried it with any other mail program, apparently in Microsoft Windows in Outlook, if you take your Powerpoint and save it as a pps file (Powerpoint Slideshow) and attach it in the email, then whenever the recipient opens the email, Powerpoint will magically load the file.
Well, okay. It’s not magic. But still. Also, another point of reference. If you do not embed the pictures, or audio files, or even some fonts, then the recipient’s system will not play them. Another reason why I tend to stay away from Powerpoint if at all possible.