1、新建SMTP.cs类库文件

public class SMTP

{

/// <summary>

/// SMTP服务器

/// </summary>

public string smtp { get; set; }

/// <summary>

/// SMTP服务器端口

/// </summary>

public int port { get; set; }

/// <summary>

/// 发件人

/// </summary>

public string from { get; set; }

/// <summary>

/// 发件人密码

/// </summary>

public string password { get; set; }

/// <summary>

/// 邮件主题

/// </summary>

public string subject { get; set; }

/// <summary>

/// 邮件主题

/// </summary>

public string body { get; set; }

/// <summary>

/// 收件人邮箱

/// </summary>

public string strto { get; set; }

/// <summary>

/// 抄送邮箱

/// </summary>

public List<string>    strcc=new List<string>();

/// <summary>

/// 发送邮件

/// </summary>

public void SendMail()

{

SmtpClient client = new SmtpClient();

client.DeliveryMethod = SmtpDeliveryMethod.Network;//指定电子邮件发送方式

client.Host = this.smtp;//邮件服务器

client.UseDefaultCredentials = false;

client.EnableSsl = true;

client.Credentials = new System.Net.NetworkCredential(this.from, this.password);//用户名、密码

client.Port = this.port;

//client.EnableSsl = true;

var msg = new MailMessage();

msg.From = new MailAddress(this.from);

msg.To.Add(strto);

if (this.strcc!=null&& this.strcc.Count>0 )

{

foreach (string OneStrcc in strcc)

{

msg.CC.Add(OneStrcc);

}

}

msg.Subject = subject;//邮件标题

msg.Body = body;//邮件内容

msg.BodyEncoding = System.Text.Encoding.UTF8;//邮件内容编码

msg.IsBodyHtml = true;//是否是HTML邮件

msg.Priority = MailPriority.High;//邮件优先级

try

{

client.Send(msg);

}

catch (SmtpException ex)

{

throw ex;

}

}

}

2、使用示例

try

{

var theSMTP = new SMTP

{

smtp = ConfigurationManager.AppSettings["smtp"],

port = Convert.ToInt32(ConfigurationManager.AppSettings["port"]),

from = ConfigurationManager.AppSettings["from"],

password = ConfigurationManager.AppSettings["password"],

subject = "主题",

body = "内容"

};

theSMTP.strto ="xxx@qq.com";

theSMTP.strcc.Add("xxx@qq.com");

theSMTP.SendMail();

}

catch (Exception ex)

{

}