c# QQ发送邮件功能

using System; using System.Collections.Generic; using System.Linq; using System.Net.Mail; using System.Text; using System.Threading.Tasks;  namespace SendEmail {     public static class Email     {         /// <summary>         ///         /// </summary>         /// <param name="getmail">收件人邮箱地址</param>         /// <param name="title">主题</param>         /// <param name="message">内容</param>         /// <param name="mailFrom">用户名</param>         /// <param name="userPassword">密码</param>         /// <returns></returns>         public static bool Sendmail(string getmail, string title, string message, string mailFrom, string userPassword)         {             // 邮件服务设置             string smtpServer = "smtp.qq.com"; //SMTP服务器             SmtpClient smtpClient = new SmtpClient();             smtpClient.EnableSsl = true;//由于使用了授权码必须设置该属性为true             smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;//指定电子邮件发送方式             smtpClient.Host = smtpServer; //指定SMTP服务器             smtpClient.Credentials = new System.Net.NetworkCredential(mailFrom, userPassword);//用户名和密码              // 发送邮件设置             MailMessage mailMessage = new MailMessage(mailFrom, getmail); // 发送人和收件人             mailMessage.Subject = title;//主题             mailMessage.Body = message;//内容             mailMessage.BodyEncoding = Encoding.UTF8;//正文编码             mailMessage.IsBodyHtml = true;//设置为HTML格式             mailMessage.Priority = MailPriority.Low;//优先级              bool b = false;             try             {                 smtpClient.Send(mailMessage); // 发送邮件                 b = true;             }             catch (Exception ex)             {                 var mes = ex;                 b = false;             }             return b;         }     } }

下面是调用