What's the best all-in-one email?

What's the best email? Here's some features I need:

-integration with my iPhone 5
-easy to use calendar, also no email-calendar-alerts like MSN spamming me emails every day
-hopefully integrates to other useful site like Youtube (Gmail)
-best one to run a website with
-amazing sorting features---i'll need to easily identify personal, business, etc.emails

I'm thinking Gmail but is there anything else?

There are others, but none run as smooth as what gmail runs at, its simple, fast and reliable, i'm using gmail just now and also have my staff using it: P

Hope this helps.