https://www.vedomosti.ru/business/news/2014/09/04/pochta-rossii-v-aprele-2015-g-zapustit-sobstvennoe-podpisnoe?utm_source=telegram&utm_campaign=share&utm_medium=social&utm_content=pochta-rossii-v-aprele-2015-g-zapustit-sobstvennoe-podpisnoe