I'm guessing there is a simple explanation but I don't see it so far. My inboxes are all the same (i.e., what is in my inbox is on all 3 devices). However, when I send or reply to an email, it is only on the device that was used. This is very frustrating as I send important emails from my iphone and ipad that I need to be able to access on my imac. Thanks for any help in advance! Cheers.