Neal, thank you for reporting this. We will be looking into the matter.  To clarify, even with the calendar event deleted, you are still receiving notification emails?  Was this a personal calendar appointment?  A domain calendar appointment?  A meeting invite with attendees?  If you could provide a little more information, it will help with troubleshooting.

No, I'm not receiving any more after deleting the event. I took a few minutes to try and find my notification settings such as where to configure getting emails of alerts and I can't find them. It's incredibly difficult and frustrating trying to find settings in SM 16 so I give up. You actually have my entire account in my open ticket so feel free to review my config in your system as I even got a notification from there as well.

Hi Neal, 

I have not seen it recently, I'll let you know if it happens again.

Thanks for the update, Neal! I'm going to mark this as Resolved for now. If you do see it again, please provide the configuration of your appointment and we'll try to replicate.