Automatic letter sorting appeared in the USSR in the 60s. 180 letter sorting machines were commissioned and people were taught to write postal codes on envelopes. First attempts to use computer technologies failed due to many circumstances and after collapse of the USSR the post had to return to manual sorting again.
Now in the regions post will be grouped in containers and sent to the automatic letter sorting center in Moscow to be sorted. The center makes a detailed sorting till 3 millions mails a day. Nearly 25% of the country post exchange will be carried out through the Moscow center of automatic letter sorting. The Automatic Letter Sorting Center is the largest center in the Eastern Europe, its square is 29000 m2 where about 900 employees work. The center's output is 3 million mails a day.
Correspondence inside of one region also will be sent initially to the center, they say it will make the process faster.
Paper correspondence initially goes to CFC (stamping machines).
The machine making interference with mail-bags and dust removal.
Then with help of mechanical devises standard letters and postcards are separated from nonstandard ones.