Can I turn off `Message Sent` (SMS) notification? Yes, you can. In order to turn off this notification you can 1. edit the registry, or 2. the easy way by just running a .CAB file. 1. Download and install a registry editor. * Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Inbox * Next, click on Inbox (make sure the Inbox is highlighted) and select Edit, New Key * Name the New Key as "Settings" * Click on "Settings" (make sure the Settings is highlighted) and select Edit, New String Value * On "Value name:", key in SMSNoSentMsg and in "Value data", key in 1 * Soft reset your device and test it with one SMS, and you will notice that the SMS Sent bubble is being disabled 2. Download .CAB file here and run it, DONE.