It looks like there's only an "inbox" and an "outbox"; there is no "sent items" box or the like. This makes it rather difficult to tell whether something is sent and received. I tried sending a PM but after sending, there's nothing in the outbox so either it must've gotten sent immediately, or it totally screwed up.
I guess this is probably a forum limitations, but I'm mentioning this in case someone knows of some settings I can adjust to improve things.
