There appear to be two editions of Office 365 with coparable price points, Office 365 Home and Office 365 Small Business Premium. Is there a comparison chart that compares all editions side by side, along with any restrictions for each?
Wikipedia has a fairly neat comparison of all the various editions and features.
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For the record, according to Microsoft's pre-sales team, the Business-class email refers to a hosted Exchange account, and is not available with the "Home" range of products (other than what you can do for free with outlook.com) – Rowland Shaw Aug 18 '14 at 12:35