in the contact form page, notice this line:
it tells us that the webassist/email/waue_EnergyContact_1.php file is being used for the email for this page.
inside the webassist/email/waue_EnergyContact_1.php file notice this line:
$MailBody = $MailBody . (GetFromPage("templates/Blank_4.php"));
it tells us that the template file for this email is the templates/Blank_4.php