I used to send me eMails with Tasks when I’m on the run. OmniFocus is able to fetch these Mails automatically into it’s Inbox. But not so Things. I always missed this feature and looked around for a possible Solution.
Now I found one in the CulturedCode Wiki to Things. They provide an AppleScript to do exactly this. You just have to create a rule in Mail.app to filter the eMails you want to send to Things and execute the script. Things must be running to work.