Hello {user.username},\r\n\r\nGreat news! Your order #{order.id} has been delivered. We hope you're enjoying your purchase. Here are the delivery\r\n\r\nDelivery Date: {order.delivery_date}\r\n\r\nIf you have any questions or need assistance, please contact us at {system.support_number}. Your satisfaction is important to us.\r\n\r\nThank you for choosing {system.company_name}.\r\n\r\nBest regards,\r\n{system.company_name}