Send user notifications after csv import entries

I user WP All Import Gravity Forms Add-On to create new GF entries. In the Gravity Form where the entries are created I have set up (scheduled) notifications. Unfortunately notifications are not sent/scheduled during or after import, because it’s not a feature in the WPAI add-on. They put the data directly in the database and I assume there is no real submission because of that. I would like to create a custom function to achieve that and asked WPAI for the right hook, but would anyone be so kind telling me what action/filter should be called upon in GF to create some sort of submission and send/schedule notifications? I know that it’s possible, because GravityImport plugin has an option to send notifications for each imported entry.