I have two questions. First, I know that Outlook 15.4 is out and I want to update from 15.3, but when I go to check for updates, it tells me nothing is available. If I go and download the full 15.4 from the Office site, will an install overwrite all of my current data? I'm new to Mac and I don't want to lose my emails since they are POP, not IMAP. Second, how do I backup my emails? When I was on Windows, I would go into Import and it would give me an option to backup from there, but there is nothing in Outlook 15.3 that does this. Any help would be appreciated.