Yes, to do so:
- Navigate to the Setup tab.
- Choose 'system email settings' in the lower right menu.
- Turn the switch for 'System emails on/off' to off.
- If you would like to disable system emails per attendee: First, make sure system emails are still on globally, then navigate to the Attendees tab.
- Click 'Edit' under the name of the attendee you wish to disable system emails for.
- On the right turn the switch off under 'Email alerts for [attendee name]'.
In either case, password emails will still be sent - bear this in mind when importing delegate data. If you do not want them to receive a password from the system, you can override this feature by adding a password to each entry in an extra column in your import spreadsheet, under the header 'password'.