OK. My mail is definitely acting wonky. All of a sudden I had something in my trash which I never put there. I knew b/c I had a number above my mail icon. I checked and it was definitely trash. I emptied it and it also emptied my inbox which had all my fine tuned Mac stuff which I hadn't responded to yet! Damn it! AppleCare will be getting a call soon but sometimes they just don't know what to do.
Uhhh... Like WOW!
That makes absolutely no sense to me. Are you running any Mail plugins or anything else that affects Mail's behavior?
You're going to have an awful hard time explaining your problems to AppleCare without showing them hard evidence, so if the same thing happens again, call before you do
anything else.