能够对发送的邮件进行加密和解密，并且能够发送和收取邮件，是很好的学习和说明程序。加密算法使用TEA，发送邮件使用的是JMAIL组建，程序使用Skin＋＋加有皮肤。-able to send mail encryption and decryption, and can send and receive mail, is a very good study and a descr iption of the proceedings. Encryption algorithm used TEA, s