Many thanks for this. It worked for me! As discussed in the thread, I had to create two separate rules, one for .mac, and one for .me. Being a hold-over from the iTools and .Mac era and now having two Mac addresses is a bit odd in itself. However, the two rules finally forced Apple Mail to properly display the icons. I never would have thought of this in a million years so do appreciate the advice. I'm now a month into the Lion experience. I wonder what other weird surprises lay in store?
As an aside, in the new Apple Mail "iPad" view, one can sort by attachments. Any idea what sort criteria is being used. Is it attachment creation date? Date sent? Or some alphabetical sort?
Thanks again
Michael