收发邮件

发送邮件

            SmtpClient client = new SmtpClient("smtp.qq.com");
            client.UseDefaultCredentials = true;
            client.Credentials = new System.Net.NetworkCredential("xxxxxxxxx", "xxxxxxxxx");
            client.DeliveryMethod = SmtpDeliveryMethod.Network;

            string file = @"D:发邮件代码 - 副本.txt";
            MailMessage message = new MailMessage(
               "xxxxxxxxx@qq.com",
               "xxxxxxxxx@qq.com",
               "自动邮件",
               "请勿回复！");

            // Create  the file attachment for this e-mail message.
            Attachment data = new Attachment(file, MediaTypeNames.Application.Octet);
            // Add time stamp information for the file.
            ContentDisposition disposition = data.ContentDisposition;
            disposition.CreationDate = System.IO.File.GetCreationTime(file);
            disposition.ModificationDate = System.IO.File.GetLastWriteTime(file);
            disposition.ReadDate = System.IO.File.GetLastAccessTime(file);
             //Add the file attachment to this e-mail message.
            message.Attachments.Add(data);
            client.Send(message);
            data.Dispose();