My email account (IMAP) on my iPhone 5 downloads mail from my mail server. The mail on my iPhone should be exactly the same as the mail in my desktop Apple Mail programme since the settings are identical. For some reason, some email messages don't show up on the iPhone mail programme. There does not appear to be any logic as to which ones show up and which ones do not show up. I checked the spam folder on the iPhone; the missing message are not there. Any ideas?