Q. How can I stop receiving the daily Outlook Calendar email?
A. Office 365 has a feature that at the start of each day sends an email with the upcoming meetings for the day that ignores any rules you may create on it to delete it, send it to Junk etc. If you want to get rid of the email each day then navigate to https://outlook.office365.com/owa/?path=/options/calendarreminders and uncheck the option to "Get a daily agenda for calendars and tasks". Note you can also configure which calendars are used to send information from and also your timezone can be changed.