I explored <CFPOP> and <CFIMAP> a little but didn't see the capabilities , I will revisit with more determination. Thank you so much I'll let you know how it turns out.
You could also consider running a small java email server (Java SMTP/POP EMail Server download | SourceForge.net) along side your Web Server that is used as a Message Queue of sorts. Using Sieve commands - there is no reason you can't redirect emails to save in a specific folder of your choosing - perhaps in cfusion/mail/Queue and putting a Directory Listener (Watching a Directory for Changes The Java™ Tutorials Essential Classes > Basic I/O) on that path that will kick off a ColdFusion request (How to Send HTTP Request and Capture Response in Java) when messages are received. The directory listener could be kicked off with Filters when the ColdFusion servlet container starts (So could the java mail server for that matter)... Just a thought