No, there wouldn't be an issue with email on SSL. The SMTP server doesn't care if you accessed the website with SSL or not. Maybe you didn't upload all of the necessary files? Make sure you uploaded all of the webassist/email folder. If you still have issues then add this to the top of the page:
<?php
ini_set("display_errors",1);
?>
Usually a blank page is an error on the page with error display turned off. Turning it on may help you diagnose and fix it.