For some reason I can't POP and IMAP straight. With Macs automatically retrieving mail even when sleeping I frequently get mail on my iPhone only to see it disappear seconds later -- it ends up on my Mac.
So what do I need to do so that all email shows up in all of my devices and never deletes until I delete it?
So what do I need to do so that all email shows up in all of my devices and never deletes until I delete it?