Is there an event that fires off when a new member is created. The only notification i can see is MemberSavedNotification, or is there a way i can use that to find out if that user was just created and not just updated?

IIRC this is also valid for members: https://docs.umbraco.com/umbraco-cms/reference/notifications/determining-new-entity

Ah ok thanks, i will give that a go