It seems as if Apple's site is saying that while .Mac will only sync .Mac mail accounts, any accounts that I add to Mail (the local program) will sync with my other machines, adding those accounts and keeping the email synced between the two stations. I have email from my ISP (BT) and from my own domain (hosted elsewhere) so I receive mail from both accounts and send via my personalized domain provider's servers. If I switch from Entourage to Mail on my iMac and MacBook, will mail synchronize the mail between the two machine so that I have the email on both, and so that when I delete messages on one, they will be deleted on the other? Can anyone point me to any in-depth articles on this? Before anyone suggests, no, my provider doesn't offer iMap.