Okay, what I want to do seems conceptually simple: If a message comes to me with X-Spam-Flag: YES, I want to automatically move it to junk.
I can make a smart mailbox named Spam which holds all of these messages, but I can't seem to figure out an event that will do the same sort of thing. I tried setting up an account.synchronize which looks for things with #source.path = 'My Spam Box', but of course this doesn't work because that's not really the source. I haven't yet found any documentation explaining what the options for filters are, so I don't know what I can or can't do; for instance, I don't know of a way to examine a header in a mmCommand. -s
