Yes, users can subscribe to rec'v email notification of new posts to their group[s]
To subscribe to receive notice of new discussions/posts in a group go to the group page and you will see where the list of discussions starts there is a link 'Group Tools' to the far left. Click that and choose 'Subscribe to Group'.
Then you should receive notice of new posts to the group page.
Make sure you have set your email client to accept emails from Virtual Assistant Forums -
here is more info on adding the forum domain to your safe senders list.