I deleted an event from my Google Calendar, and I received an email saying "An event has been moved to Trash." There is no unsubscribe link in the email. How do I turn these notifications off?
Go to calendar.google.com, hover over the calendar that you got that notification from in the side bar, click the down arrow, and then select "Edit Notifications". You can then select/deselect the notifications you wish to be e-mailed for. "Canceled Event" seems to be the notification that you received.
Alternately, you can go to
Settings > Calendars to see the links to each calendar's notification settings.