Edit Recurring invoice email template

I have set up recurring invoices on my ERPnext. I want in addition to sending the generated invoice in PDF i want to also send summary of the invoice on email body. Can anyone indicate to me where i can do this editing? thank you in advance

@Mute,

please check

https://github.com/frappe/erpnext/blob/develop/erpnext/controllers/recurring_document.py#L134

thank you @makarand_b…could you have and idea where variables on this line of code message = _("Please find attached {0} #{1}").format(new_rv.doctype, new_rv.name), are defined?