C#发送邮箱

之前自己从来没有做过发送邮箱的功能，前段时间项目需要，在找了很多帖子之后，终于实现了。

　　之后有整理了一下，写了一个类。直接给类传递信息，就可以发送了。

　　这里还需要说明的是，发送邮箱需要开通POP3/SMTP服务，否则QQ邮箱，网易邮箱等会报错。接收的邮箱就不用开通啦，开通方法百度一下就知道啦。

 public static class EmailHelper
     {
         /// <summary>
         /// 发送邮件
         /// </summary>
         /// <param name="subject">邮件主题</param>
         /// <param name="msg">邮件内容</param>
         /// <param name="filePath">附件地址，如果不添加附件传null或""</param>
         /// <param name="senderEmail">发送人邮箱地址</param>
         /// <param name="senderPwd">发送人邮箱密码</param>
         /// <param name="recipientEmail">接收人邮箱</param>
         public static void SendMail(string subject, string msg, string filePath, string senderEmail, string senderPwd, params string[] recipientEmail)
         {
             if (!CheckIsNotEmptyOrNull(subject, msg, senderEmail, senderPwd) || recipientEmail == null || recipientEmail.Length == 0)
             {
                 throw new Exception("输入信息无效");
             }
             try
             {
                 string[] sendFromUser = senderEmail.Split('@');

                 //构造一个Email的Message对象
                 MailMessage message = new MailMessage();

                 //确定smtp服务器地址。实例化一个Smtp客户端
                 System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient("smtp." + sendFromUser[]);

                 //构造发件人地址对象
                 message.From = new MailAddress(senderEmail, sendFromUser[], Encoding.UTF8);

                 //构造收件人地址对象
                 foreach (string userName in recipientEmail)
                 {
                     message.To.Add(new MailAddress(userName, userName.Split('@')[], Encoding.UTF8));
                 }

                 if (!string.IsNullOrEmpty(filePath))
                 {
                     Attachment attach = new Attachment(filePath);
                     //得到文件的信息
                     ContentDisposition disposition = attach.ContentDisposition;
                     disposition.CreationDate = System.IO.File.GetCreationTime(filePath);
                     disposition.ModificationDate = System.IO.File.GetLastWriteTime(filePath);
                     disposition.ReadDate = System.IO.File.GetLastAccessTime(filePath);
                     //向邮件添加附件
                     message.Attachments.Add(attach);
                 }

                 //添加邮件主题和内容
                 message.Subject = subject;
                 message.SubjectEncoding = Encoding.UTF8;
                 message.Body = msg;
                 message.BodyEncoding = Encoding.UTF8;

                 //设置邮件的信息
                 client.DeliveryMethod = SmtpDeliveryMethod.Network;
                 message.BodyEncoding = System.Text.Encoding.UTF8;
                 message.IsBodyHtml = false;

                 //如果服务器支持安全连接，则将安全连接设为true。
                 //gmail,qq支持，163不支持
                 switch (sendFromUser[])
                 {
                     case "gmail.com":
                     case "qq.com":
                         client.EnableSsl = true;
                         break;
                     default:
                         client.EnableSsl = false;
                         break;
                 }

                 //设置用户名和密码。
                 client.UseDefaultCredentials = false;
                 //用户登陆信息
                 NetworkCredential myCredentials = new NetworkCredential(senderEmail, senderPwd);
                 client.Credentials = myCredentials;
                 //发送邮件
                 client.Send(message);
             }
             catch (Exception ex)
             {
                 throw (ex);
             }
         }

         /// <summary>
         /// 验证所有传入字符串不能为空或null
         /// </summary>
         /// <param name="ps">参数列表</param>
         /// <returns>都不为空或null返回true，否则返回false</returns>
         public static bool CheckIsNotEmptyOrNull(params string[] ps)
         {
             if (ps != null)
             {
                 foreach (string item in ps)
                 {
                     if (string.IsNullOrEmpty(item)) return false;
                 }
                 return true;
             }
             return false;
         }
     }

，直接调用方法，传递需要发送的信息，就可以发送邮箱了。