Moves in Correspondence
Chess are not
necessarily mailed any longer. They can also be
faxed, or
telephoned for that
matter -- but that would be rather
pointless. In
theory they could also be
hidden in the
personal ads in
newspapers; but
generally they are mailed by standard old-fashioned
Postal Mail.
E-mailing the moves is getting more and more
common though.
However, most of the official tournaments are using ordinary Postal Mail or fax. International tournaments are generally organized by ICCF (the International Chess Correspondence Federation), and the national by the national organizations (such as SSKK for Sweden, or CCLA for the USA).
Now that everyone uses strategy books or advanced computer programs to make their moves, the concept is getting less and less popular.
World Championships in Correspondence Chess have been held by the ICCF since 1950.