So which email services are you using on your iPhone? Apple gives away iCloud's me.com addresses for free now, geeks love their Gmail (though not the app!), Yahoo! mail is still going strong, even if Yahoo! isn't, and Microsoft recently said 2 million iOS 5 users were using Hotmail, and growing at the rate of 100k a day now that it's easier to setup (go figure!). Then there's corporate Exchange, your ISP's email, home-spun servers, and all sorts of other stuff.