Why CSV Import Task submitted through Scheduled Script is not sending Status Notification Email?

I have a Schedule script that executes task to import csv using below code:

 let importTask = N_TASK.create({

                           taskType: N_TASK.TaskType.CSV_IMPORT,

                           mappingId: rmaImportId, //Id for you saved import for example

                           importFile: fileObj,

                     name: "AJR_TG_RMA_Update" + today

                       });

But the problem its neither sending email on CSV Import task execution finished, neither I see any way to access the CSV Respose file to check the import details using script.

I need a way to let the user know what happened to the CSV import through email.

Please help me to find a solution.

Thank you.

Asha