Email Notication not sending email

I cannot get the email notification part of your Q&A plugin to function. I receive New User emails (from WordPress core files) and there are no new question email notifications in my Junk Mail and I have tested the Q&A plugin as the site admin and as a newly registered user. But I get no notification email that a new question has been posted. Since I want to have new questions moderated, it's important that I get this bit resolved. What have I missed? Where is the send-to email address defined? If Q&A Email Notifications borrows it from Settings > General where might have it failed? Thanks.