163邮箱发送

 /// <summary> 
    /// 发送邮件 
    /// </summary> 
    /// <param name="from">发送人邮件地址</param> 
    /// <param name="to">接收人邮件地址</param> 
    /// <param name="subject">邮件主题</param> 
    /// <param name="isBodyHtml">是否是Html</param> 
    /// <param name="body">邮件体</param> 
    /// <param name="smtpHost">SMTP服务器地址,例如:smtp.163.com</param> 
    /// <param name="userName">用户名</param> 
    /// <param name="password">密码</param> 
    /// <returns>是否成功</returns> 
    public static bool Send(string from, string to, string subject, bool isBodyHtml, string body, string smtpHost, string userName, string password)
    {
        string[] ts = to.Split(',');
        bool isSuccess = true;
        foreach (string t in ts)
        {
            try
            {
                MailMessage mm = new MailMessage();
                mm.From = new MailAddress(from);

                mm.To.Add(new MailAddress(t.Trim()));

                mm.Subject = subject;
                mm.IsBodyHtml = isBodyHtml;
                mm.Body = body;

                SmtpClient sc = new SmtpClient();
                sc.Host = smtpHost;

                sc.UseDefaultCredentials = true;//winform中不受影响，asp.net中，false表示不发送身份严正信息 
                //smtpClient.EnableSsl = true;//如果服务器不支持ssl则报，服务器不支持安全连接 错误 
                sc.Credentials = new System.Net.NetworkCredential(userName, password);
                sc.DeliveryMethod = SmtpDeliveryMethod.Network;

                sc.Send(mm);
            }
            catch
            {
                isSuccess = false;
            }
        }
        return isSuccess;
    } 

、、--------------------------------------------------------------第二种方法------------------------------------------------------------------

  #region 邮件发送

    /// <summary>  
    /// 发送邮件支持HTML格式 先引用System.Net.Mail;  
    /// </summary>  
    /// <param name="MailFrom">发送人Email 如[email protected]</param>  
    /// <param name="MailServer">邮件服务器 如mail.126.com</param>  
    /// <param name="MailUserName">登陆用户名 如[email protected]</param>  
    /// <param name="MailPassword">登陆密码 如123456</param>  
    /// <param name="mailto">收件人邮箱</param>  
    /// <param name="title">邮件标题</param>  
    /// <param name="msg">邮件正文</param>  
    /// <returns>成功 true; 失败 false</returns>  
    public static bool SendSmtpEmail(string MailFrom, string MailServer, string MailUserName, string MailPassword, string mailto, string title, string msg)
    {
        var client = new System.Net.Mail.SmtpClient();
        client.Host = MailServer;
        client.UseDefaultCredentials = false;
        client.Credentials = new System.Net.NetworkCredential(MailUserName, MailPassword);
        client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
        System.Net.Mail.MailMessage message = new MailMessage(MailFrom, mailto);
        message.Subject = title;
        message.Body = msg;
        message.SubjectEncoding = System.Text.Encoding.UTF8;
        message.BodyEncoding = System.Text.Encoding.UTF8;
        message.IsBodyHtml = true;
        message.Priority = MailPriority.High;
        message.IsBodyHtml = true;
        try
        {
            client.Send(message);
            return true;
        }
        catch
        {
            return false;
        }
    }
    #endregion