Questions about PMs

How big are each of the boxes? (Inbox, Sentbox, Outbox, Savebox)

Can they be bigger?

What happens when you have one of your boxes full? Say if I had my Outbox full, would I be unable to send PMs until someone reads one of my PMs? If my Sentbox was full, would the person I sent the PM to be unable to read it? If my Inbox was full, would PMs bounce?

Any response? My sentbox has been filling up pretty quickly lately with all the trades I've been doing.

My sentbox always fills up really quickly. I am not sure of the numbers though...

My guess is that if your sentbox is full, your oldest message gets deleted.

There is no max for the outbox
Inbox: 75
Sentbox: 25
Saved: 25