"Welcome :first_name,\nYour account has been created successfully", 'new_order' => 'A new order has been placed. The order id is #:order_id', 'order_has_been_placed' => "Hi :first_name,\nYour order #:order_id has been placed. Thanks for shopping with us", 'order_status_changed' => "Hi :first_name,\nYour order #:order_id status is changed to :status", ];