说明：  mail server可在列表框中选择，一种可发送QQ邮件，一种可发送gmail邮件，两种方法都是需服务器用户名密码验证，比如输入个人QQ邮箱+正确的密码可进行邮件的正常发送。
(Mail server can be selected in the list box, a kind of can send QQ E-mail, one can send a gmail, two methods are both need to server user name password authentication, such as input personal QQ E-mail and the correct password can be normal delivery of messages.)