Yes, to do so:
- Navigate to the Setup tab.
- Under the 'Main function settings' heading, turn off the switch for Private messaging. The same can be done to toggle any other options under this heading.
- If you would also like to disable system emails: 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: 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]'.
Even while private messaging or system emails are set to off, previously sent emails and messages are still visible to applicable users. The system emailer will also still send password-related emails to attendees while the system emailer is set to off.