herro, Try sending me a private message, and we'll see if we can track this down. (My inbox is not full)
I just sent you a message, and it did appear in my Sent file.
One thing--one of the settings that posters can set is to opt out of receiving either emails or private messages from other posters. The posters you tried to PM may have that setting. However, I would think that the software would tell you why your mail was not sent.