After digging a little, I found that file order_conf.txt was missing. The email is sent now, but the content is not correct.
Variable {date}; {payment}; {products};{discounts};{total_products}; {total_discounts};{total_shipping} {carrier};{delivery_block_html};{invoice_block_html} are dispayed as text instead of correct value. Thus valiable {first_name}, {name} and {order} worked correct. Any idea how can I fix this? In folder mail I have files: order_conf.html, order_conf.txt;
order_conf_cart_rules.tpl, order_conf_cart_rules.txt, order_conf_product_list.tpl, order_conf_product_list.txt.