[prnzchrmg]

Thanks for the response. After much reading, I found that CAB, as well. I was worried about using it because of the warnings of using it with third-party SMS clients, which I do. However, this manual registry hack has indeed worked for me:

HKLM\Software\Microsoft\Inbox\Settings SMSNoSentMsg = 0
HKCU\ControlPanel\Notifications\Default Options = 0
HKCU\Software\Microsoft\Inbox\Settings DisableSMSDeliveryReceipt = 0
Soft reboot

-mt