So I bought a Windows Phone because I love antiquities I guess ? 
A Lumia 950 to be precise.
I haven't delved into the Continuum option yet or some of the most advanced stuff, but here's a few rough thoughts :
- Camera certainly wayyy better than the Xperia M2.
- Integration with Office and One Drive is much better than on Android, obviously. The whole syncing with a W10 computer is seamless, so that's good. Outlook being capable of retrieving mails from other mail providers is good too (don't know if Google or Apple offers the same now ?).
- I like W10M, It's pleasant to use and it performs well as a no-nonsense device. But I'm not a heavy video on mobile or exotic app user. Edge is OK I guess, but the browser is probably the default app I will try to ditch first in the future.
- Battery life is pretty meh, I'm a bit let down by that. I was expecting a closed system to be able to keep a low energy signature. Also the phone noticeably will heat when multitasking, major comfort issue. USB-C charges super fast, but that's a bit of a band-aid for a more serious issue.
iOS uses any number of internet accounts to be registered in Settings, and then depending on what you select to see from them, populates other apps with the content. So you can register Apple, Google, Yahoo, AOL, Exchange accounts there, and then choose if you want to see mail, contacts, calendar items from them in the dedicated apps.
In Mail, you can look at accounts individually, or under "All Inboxes" in a unified Inbox. This structure is also kept in OS X's Mail app.
