Emailing the editor in a category that's related and active might produce a result or it might not. Communicating with submitters is generally discouraged inside DMOZ.
Two possible options are to
a) submit to the appropriate regional category (usually they are more active and
may be easier to get listed in), and
b) submit to a category your own best judgment indicates is similar to your site. If there is a better category for your site the editor will transfer your submittal onward to it.
Have a little faith, selecting appropriate categories is an essential part of what DMOZ editors do
