Напоминаем Вам о необходимости... (We remind you of the need to...)
Usually С уважением, (With respect,). obrazec oformlenija delovoe pisma
If any documents are attached. Visual Template (Obrazec) Напоминаем Вам о необходимости
A short phrase summarizing the content, usually starting with "О..." (About) or "Касательно..." (Regarding). obrazec oformlenija delovoe pisma
Includes the company name, logo, address, phone number, and email.
Подтверждаем получение Вашего письма... (We confirm receipt of your letter...)