United Nations, Dec 19 (UNI) Father Christmas, popularly known as Santa Claus, receive more than six million letters every year from children worldwide, according to the United Nations Universal Postal Union (UPU).
In at least 20 countries, postal operations employ special elves to reply the mails addressed, ''To Santa, North Pole''.
According to the report, with more than one million children of each country sending mails, Canadians and the French are among the busiest correspondents.
While Canada Post, where Santa enjoys his own postcode: H0H 0H0, replies to letters in 26 languages, Germany's Deutsche Post replies in 16 languages.
Despite the emergence of emails, text messages and other forms of electronic communication in recent years, the volume of mail continues to increase and reach its height in December.
Nobody knows where Santa lives, however, last year 90 per cent of the total letters were sent to Finland. France, Germany and Slovakia are also among the countries receiving such letters.