I have found a bug where if you use brackets '[]' in your board title it will be displayed incorrectly in the notification emails you get when a private message arrives. For example my current board title is [On|E] Forums and when I get an email notification the email says it is from \[On|E\] Forums instead of saying it is from [On|E] Forums.
I tried changing the board title to just On|E Forums and the problem went away.
The board title in the message body displays properly however, it is only the from field of the email that displays it wrong.
(https://www.simplemachines.org/community/proxy.php?request=http%3A%2F%2Fwww.olcottfamily.com%2Fsmfbugreport1.PNG&hash=347cfe6b9d80bff2345b90b08ec9e280f62172c3)
P.S. Awesome forum guys, are there other ways of donating to SMF than charter membership because my wife practically killed me to death when I ordered Linux CD's on eBay for $5 so she would never let me send $50 to something that is free, but $20 or $30 I would like to do.
Thanks for the report, it does seem to happen to me too.
http://www.simplemachines.org/about/donate.php - donations.
This appears to be deliberate. I just need to find the reasoning. It maybe that unescaped brackets can not appear in the email header.