afaik, currently only with specific actor assignments, but I think what you want to achieve can be done that way.
Maybe it would be nice to have the addressresolver go to the assignment handler wich *can* have a custom resolver per assignment and if not, use the default one (which in turn can be configurable)
Any more information about the addressresolver ?
I could just see that it should extends some interface and resolve the email from the actor name,
how do I get the assignment handler,
what about the custom resolver per assignment?
is very thin, not much information goes there and I've just installed JBPM for the first time :-)