JavaMail
http://www.hellohiro.com/javamail.htm
JavaでHello World JavaMail(SMTP)編
http://www.hellohiro.com/javamailpop.htm
JavaでHello World JavaMail(POP)編
http://www.dmz.hitachi-sk.co.jp/Java/Tech/api/javamail.html
JavaMail
http://www.javadrive.jp/javamail/index.html
JavaMailの使い方
http://www.javadrive.jp/index.html
Java/Java3d/Swing/Game/Servlet/J2ME/Java2d