> "One account, all of Google", not if the account isn't a Gmail account. Having recently been burned by this, I can wholeheartedly agree. The list of features

> "One account, all of Google", not if the account isn't a Gmail account. Having recently been burned by this, I can wholeheartedly agree. The list of features that don't work if your Google account is not "@gmail.com" has caught me out so many times. The problem is even worse if you are an Android user and have a bunch of app purchases tied to a non gmail google account - as I recently discovered when trying to add my old Google Apps (custom domain name) based Google account to our Google play family plan. The lack of documentation on what works/doesn't work is staggering as well.