Stephan Busemann’s Chess Page – This CC GM provides some interesting articles and a section exploring the question of the use of computers in CC.
Chess Mail – This is the premier print publication in the world for CC. Lots of online content, including book reviews, player profiles, and downloads of CC games.
CorrespondenceChess.com – “Suite” of sub-sites devoted to CC. Tons of stuff here.
Power Play in the Correspondence Chess Opening
Article 1 – Tim Harding discusses how to play the opening in a correspondence game.
Article 2 – A revisiting of the Power Play, thanks in part (apparently) to Chessopolis.
U.S.C.F. Correspondence Page – Rules, ratings, and news from the USCF.
EC Tool – Very popular e-mail correspondence program. Freeware.
Correspondence / Email Chess Software
IceChess – E-mail chess program integrates directly with your mail program.
InterChess – Polished freeware program for e-mail chess. Also includes a chess engine to play against, and homepage keeps a list of potential e-mail opponents.
Mail Chess – Can automatically detect which incoming e-mail belongs to which game, supports Winboard engines for analysis, plus all the usual stuff.
All India Correspondence Chess Federation (AICCF)
Correspondence / Email Chess Organizations
Web-based Interfaces & Opponent Matching
Chessfriend — Commercial site organizes CC tournaments with cash prizes.
1.b4 Tournaments – Thematic e-mail tournaments at Marek Trokenheim’s b4 page.
Email Chess Tournaments
ChessWorld.net – Offers tournaments, leagues for different skill levels, and team play.