Right now, Classic doesn't have the ability to let you approve each post before it gets posted. It does allow you to censor our words and be notified by email of every new post though.
However, the UBB.threads
software does have this feature. UBB.threads is $229 for a lifetime licnese.
Just a warning, the UBB.threads software is quite different in look and feel than UBB.classic, so you may want to try out the free trial
first <img src="https://www.ubbcentral.com/boards/images/graemlins/smile.gif" alt="" />
Infopop Customer SupportFill Out A Trouble Ticket Here