The private messaging function on the board has the ability to e-mail you if you get a private message.
The e-mail informing you that you have a private message is generated by the board and sent to you.
The default e-mail reply to for the board is the first admin. That person is me simply because I installed the board and did the primary setups.
Anyway, the point is that when you get an e-mail from the board indicating that you have a private/personal message waiting on the board there will be a link at the bottom that will take you to that topic. If you reply to the e-mail, it comes to the board's default reply to e-mail. So, I get the reply instead of the intended party.
Just an FYI, so you don't miss an important communication from someone.