Using Outlook for Android for personal email and calendar management
Scott, there are many email clients for Android with unified inbox. I'm using Edison email right now with 7 Outlook accounts and one work Exchange Activesync account while I wait for a HUB+ fix. I haven't found one that gives me everything HUB+ does, but besides Edison, there is Bluemail, Aquamail, Spark, Nine, and many others. All authenticated for me when I tried them.