I’ve also the problem with the empty body in case of posting via email.
I guess the problem is that there is a new version of the pop3-class. The function pop3->get ignores empty lines. If you comment lines 370-373 in wp-includes/class-pop3.php it will work, but I don’t know any sideaffects!
Maybe someone can check if this lines are different in older versions.
I’m still testing the email-feature now …
