Task Manager - Mail trigger on Task Submit - with attachment

Dear Community,

We created a data form for Entity sign off for business user, using Task Manager.

Once the user submit the task, FCCS is triggering the mail for approval, to approve/reject.

Customer requirement is to trigger a mail on Submitting a task in Task Manager, along with the submitted data form as attachment(offline form).

We are out of options with the product setup/ limitation.(Suggested an alternative using MR and Bursting Report, with job schedule. This will not depend on Task status)

Please suggest/provide the process flow, if the requirement can be fulfilled.