Thank you for your post.
There is a Send Mail script step, but that only works on Mac OS. If you have windows, you can use Open URL script step, and use "mailto:" with the contents of the Email field.
If you need further clarification, please let me know.
If you don´t mind editing a few rows of PHP yourself it is pretty easy to make PHP send E-mails for you. There are several guides and ready go to functions for this if you google the subject or look at the PHP function mail() in the PHP manual at http://www.php.net/