Jeff has mentioned once or twice that he checks his PMs regularly, but he only gets his emails at his business so he may not see a weekend email until Monday.
OTOH, when I was getting my first Chuck we were having a PM 'conversation' and he asked me to re-send him a PM because he accidentally deleted it. With most email programs you can recover a deleted email but I don't know that any forum software gives an option to recover a deleted PM.