Is there a way to distribute e-mail based on the consideration of several attributes and values?  A simple example:  attributes type and category have several different values, say, routine and problem for type and hardware and software for category, but one would only like messages sent when there's a problem to different sets of hardware or software types.  Thus:

Email

type routine   category hardware = no message

                        category software = no message

type problem  category hardware =  a@bcd.efg, h@ijk.lmn

                         category software = 1@opq.rst, 2@uvw.xyz