ChessRally   
http://www.ingenuware.com

Play chess with new and old friends alike over the Internet, your local network, through Email (correspondence games), or play against several challenging computer opponents. Meet up with people and make new friends in the Online Rally Rooms (a chat and game service) to chat, play, or just be a spectator. ChessRally is a full-featured game for beginners and masters alike, with robust graphics and sound, fun characters, a customizable interface with free downloadable themes (skins, sets and sounds), smooth animation, a complete User's Guide, and free technical support. ChessRally contains full support for rated games, timed games, all internationally accepted rules, computer move suggestions, a risk indicator, "Experimenting Mode", loading, saving, printing, PGN and FEN import/export, an interactive Move History window, unlimited undo, and more. This download of ChessRally contains both the Free Edition, a free full-featured email chess game, and the Gold Edition with all of the other features mentioned above, which you get to try for free for 15-days. At the end of the Gold Edition features trial, if you choose not to upgrade to the Gold Edition, the Free Edition is yours to use for as long as you like for playing email chess entirely free, without restrictions or nag screens. Upgrading to the Gold Edition is easy with a fast, self-patching upgrade process (no new downloads to get) and costs $19.99.

Email Chess   
http://www.magi-au.com

Email Chess allows you to play chess with a friend over standard email. By sending your moves back and forth over your email account, you can play chess with as many other friends as you wish, simultaneously. Simple and easy to play with a drag and drop interface.

ChesseR   
http://www.ponderlabs.com

ChesseR is an application that allows you to play correspondence chess with anyone that has an email address. Visually the chess board is very easy to look at. The chess pieces are not all cluttered together as I have seen with other programs. This is important for tough moves that require you to study the board. There is an optional "piece trail" feature that displays legal moves for a piece when the mouse cursor is placed over it. The chess board can be resized. A neat feature is the use of color tinting. This allows you to change the color of an item, yet retain its shading. All the colors of the "ChesseR Desktop" can be "tinted" to your liking. Current game information is in plain view listing total moves, game length (in days), last move, captured pieces and so on. You can send and receive moves directly with your email account or simply cut and paste your moves from your email application. A POP3 email account is NOT required to use this program. A message to your foe can be sent along with your move if you wish. This is a blue jeans program for people that want to play a nice game of chess with their friends. No time limit on moves. Just bat your moves back and forth till someone wins.