Hi @Rahul74 ,
As per your query, I would like to inform you that we have already this feature that when customer places order both admin and customer used to get confirmation mail.
mail to admin for order id10- https://prnt.sc/trs781
mail to customer for same order - https://prnt.sc/trs7hw
so in case if you are not getting mails, please check credentials once.
Please let us know in case of any further issue.