Hi,
The submit by email function will attach the complete form to the email. It cannot (afaik) split a form into five different PDFs.
However there are workarounds.
If you save the form as a Dynamic XML form in the save as dialog, then you can show and hide pages.
Here is an example of a form that changes the presence property of pages, depending on the choice selected from the dropdown.
http://www.assuredynamics.com/index.php/category/portfolio/showing-and-hiding-pages/
When it comes to something like this it is helpful to split the script. The mouseUp event fires before the click event.
For example for the email button on page 1, you can modify the script in the example to hide each of the pages 2-5 in the mouseUp event and then in the click event have the email script. In the postSubmit event you could have script to show all the pages again.
A word of caution - if the user has Reader then the form needs to be Reader Enabled, otherwise the submit as PDF will fail silently.
Hope that helps,
Niall
Assure Dynamics