I have iCloud account setup on my Z10. After reading/deleting emails on Z10, when I access iCloud account from other devices (Mac/iPad/PC browser), emails I deleted from Z10 still is inbox as not read. If I delete emails from other devices, emails deleted from Z10. Looks like Z10 have no problem receiving changes from iCloud server but iCloud server is not receiving changes I made on Z10.
Is this normal? BTW, my iCloud email is setup as IMAP (imap.mail.me.com).