I still haven't figured out how to properly sync mail. My primary email, calendar and contact service is Google, then I use another 3 IMAP accounts. It works really good via Exchange but I'd like iCloud to sync all these accounts for me without me configuring manually everything on every device. From what I gather, you must use firstname.lastname@example.org account but does that mean it syncs only mail on that account? Or does it push other mail accounts as well? (I don't want to forward my accounts to email@example.com adress). Please, can someone enlighten me?