Synchronising Mail
I access my mail via iOS on my iPhone and iPad, and have done for some time. I have recently got a MacBook Air and am now also accessing my mail via the laptop. I would have expected the mail to synchronise between the devices, but it doesn't.
For example, if I read my mail on the MacBook (which I just have done), and e.g. delete it, or move it to a folder within Mail, why does it still show as unread in the Inbox on e.g. my iPad, or am I missing something?
MacBook Air, OS X El Capitan (10.11.3)