On at least three occasions, mail has failed to receive emails that I know for sure have been sent. I use different accounts with mail, one of which is a POP account and the other an IMAP account via Microsaft Exchange Server. Both of these accounts "lost" a message that I know for ceratin was sent. What is happening? A mystery to me and a worry, for any other emails that I might not know about, and might never know. I thought Mail was the prefect email client, now I'm doubting this. Also, regarding the POP account, when I move mail from my "INBOX" to a folder "ON MY MAC", shouldn't that delete it from the server? I quickly used Entourage to see if the above-mentioned missing messages were there (they weren't), and found that messages that I had moved from my inbox were still there on the server..... ???? I use OS X 10.2.8, on a dual G4 1.4 Ghz.