The SZ's new Private Message feature allows us to send PM's to one another directly within the SZ forum.
It also supports sending a PM to 'multiple' members. Before you can receive PM's, you'll first need to make sure you've got the Private Message (PM) feature enabled:
My Stuff > Accept private messages from other users: Yes.
My Stuff > Do you want to be notified via email when you receive a private message? Yes/No.
Once you've got the receive PM feature enabled, when you've got an incoming PM waiting for you, an icon of an envelope appears next to the "My Stuff" drop down menu. To read it, select: My Stuff > Messages.