Bernard, I feel differently.My email is so filled with spam, I don't check it everyday. Then when I do, I usually delete anything from someone I don't recognize. You can see where I would easily delete something from a Mudcatter.
With the PM's, on the other hand, I see the notification as soon as I log onto Mudcat (which is more often than checking my email.) The only drawback to a PM is that I cannot send an attached file (text, picture, or midi.)
Besides, I like to keep all my Mudcat correspondence in one place. I try to file Mudcat emails together, but they're obviously not with my PM's.