Microsoft has launched Outlook for iOS, and it’s free for all users. Not only does it connect to Exchange and Office 365 accounts, it also supports iCloud, Gmail, Yahoo, IMAP, and POP. One of the biggest differences between Outlook and Mail on iOS is that Outlook has the calendar combined within the app. It also has better support, in my opinion, for viewing and attaching files. Outlook for iOS is worth a look, and is definitely a sign of things to come from Microsoft.