How does Posterous handle long emails sent to the twitter update? Let’s find out.

So far whenever I've used Posterous, it's been to email a picture to my posterous blog with a short subject line that I know is less than 140 characters so that the message and post.ly link will show up properly in Twitter and not cause any problems. The subject line of this email is much less than 140 characters, but the email itself is much longer. I'm a geek and I just want to watch it happen. That is all.