JavaMail

http://www.cnblogs.com/zacard-orc/p/3646979.html

http://haolloyin.blog.51cto.com/1177454/354320/

http://www.oschina.net/project/tag/107/mailserver?lang=19&os=37&sort=view

http://www.cnblogs.com/xudong-bupt/archive/2013/04/15/3023154.html