I don't think NetApp natively supports sending email notifications for the "fpolicy file-operational events" such as the ones you have mentioned. Email notifications can be sent for ONTAP Kernel based "EMS" events but I don't think that level of granularity is there.
ONTAP kernel based EMS system has a catalogue and each event's information can be viewed using event catalogue command.
If you want to know any EMS events that include fpolicy related alerts then you can use this command:
::> event catalog show -message-name fpolicy*
May be external fpolicy target such as 'Varonis' may have have this option in the their front-end GUI?