C#通过SMTP服务器实现邮件发送

参考资料：http://topic.csdn.net/u/20090612/09/01238dd0-df55-40dd-b16c-e14d0634513d.html

http://www.cnblogs.com/q149072205/archive/2012/04/20/2458958.html




public static string SendMail(string mailto, string mailtoName, string mailsubject, string mailbody, string mailFrom, string mailFromName)
    {
try
{
        //邮件发送人地址
        System.Net.Mail.MailAddress from = new System.Net.Mail.MailAddress(mailFrom, mailFromName);
            //如test@163.com,初步测试，用test@sina.com不行，用163的邮件服务器，就必须用163邮箱的用户名
            //收件人地址
        System.Net.Mail.MailAddress to = new System.Net.Mail.MailAddress(mailto, mailtoName);//如test@tom.com
            System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage(from, to);
            mail.Subject = mailsubject;
            mail.Body = mailbody;
            mail.BodyEncoding = System.Text.Encoding.UTF8;

            mail.IsBodyHtml = true;  //是否包含HTML
            //以下设置服务器 163邮箱为例
            SmtpClient mySmth = new SmtpClient("smtp.163.com");
            ////以下为增加附件 没做测试
            //List<string> list = new List<string>();
            //list.Add(Request.PhysicalApplicationPath+"images/QQ截图未命名1.jpg");
            //int count = list.Count;
            //if (count > 0)
            //{