[转]C#接收邮件

最近由于工作需要,接触到了邮件服务器.以前我用CF写过,感觉没有什么,我想用C#来实现会更简单,但是万万没想到C#没有提供邮件接收的方法,令我很不解.通过我在网上查找,发现了一个国外公司写好的接收邮件软件,通过我把他的DLL破解之后就不用注册了,要不可是需要花钱买序列号的啊好贵的啊!不过我希望各位如果有能力还是去买正版的为好!我破解他的确是没有办法的办法拉!请各位能够理解^_^

下面是接收邮件的主程序代码如下:

 
using System;
using System.Text;
using System.IO;
using Email.POP3;

namespace TestPOP3
{
    class example
    {
        [STAThread]
        static void Main(string[] args)
        {
            //我测试的时候用的是163的邮箱，163的免费POP邮件服务器是pop.163.com。而163官方给出的是                    
            //pop.126.com在这里不能用,原因是这个邮件服务器是有SSL加密的，GMAIL我也测试了也不能用都是这个原因
            POP3 objPOP3 = new POP3("pop.163.com", 110, "用户名", "密码");
            Console.WriteLine(objPOP3.Connect() ? "Connected" : "Can't connect");
            try
            {
                if (objPOP3.IsAPOPSupported)
                {
                    Console.WriteLine(objPOP3.SecureLogin() ? "Secure Logged in" : "Can't login");
                }
                else
                {
                    Console.WriteLine(objPOP3.Login() ? "Logged in" : "Can't login");
                }
                objPOP3.QueryServer();
                Console.WriteLine("Emails count: " + objPOP3.TotalMailCount);
                //以下的FOR循环是显示出所有收件箱里面的邮件信息
                for (int i = 1; i <= objPOP3.TotalMailCount; i++)
                {
                    EmailMessage objEmail = objPOP3.GetMessage(i, false); // use true to get headers only
                    Console.WriteLine("NEW MESSAGE:------------------");
                    Console.WriteLine("FROM: " + objEmail.From);
                    Console.WriteLine("TO: " + objEmail.To);
                    Console.WriteLine("CC: " + objEmail.Cc);
                    Console.WriteLine("SUBJECT: " + objEmail.Subject);
                    Console.WriteLine("DATE: " + objEmail.Date);
                    Console.WriteLine("CONTENT-TYPE: " + objEmail.ContentType);
                    Console.WriteLine("CHARSET: " + objEmail.Charset);
                    Console.WriteLine("MESSAGE-ID: " + objEmail.GetCustomHeader("Message-ID")); 
                    Console.WriteLine("MESSAGE SIZE: " + objEmail.Size);
                    if (objEmail.IsAnyAttachments)
                    {
                        for (int a = 0; a < objEmail.Attachments.Count; a++)
                        {
                            //调用邮件附件的方法
                            processAttachment((Attachment)objEmail.Attachments[a], 1);
                        }
                    }
                    else
                    {
                        Console.WriteLine("BODY: " + Encoding.Default.GetString(Convert.FromBase64String(objEmail.Body)));
                    }
                    //下面注册掉的代码是删除该邮件
                    //objPOP3.DeleteMessage(i);

                }
                objPOP3.Close();
            }
            catch (System.Exception e)
            {
                Console.WriteLine(e.Message);
                Console.ReadLine();
                objPOP3.Close();
                return;
            }

        }

        static void processAttachment(Attachment att, int nesting)
        {
            for(int i = 0; i < nesting * 2; i++) Console.Write("-");

            //以下注释掉的代码可以打开，以下都是关于邮件附件的相关信息，因为我只需要得到附件的文件信息^_^

            //Console.WriteLine("ATT: ");
            //Console.WriteLine("ContentTransferEncoding: " + att.ContentTransferEncoding);
            //Console.WriteLine("ContentType: " + att.ContentType);
            //Console.WriteLine("EstimatedSize: " + att.EstimatedSize);
            //Console.WriteLine("FileName: " + att.FileName);
            //processBody("HtmlBody", att.HtmlBody);
            //processBody("TextBody", att.TextBody);
            //Console.WriteLine("IsAnyAttachments: " + att.IsAnyAttachments);
            //Console.WriteLine("IsFileAttachment: " + att.IsFileAttachment);
            if (att.IsAnyAttachments)
            {
                for (int a = 0; a < att.Attachments.Count; a++)
                {
                    processAttachment((Attachment)att.Attachments[a], nesting * 2);
                }
            }
            if(att.IsFileAttachment)
            {
                //这里说一下在保存邮件附件之前必须"c:/pop3"该文件夹是存在的，否则是保存不了的
                att.Save(@"c:/pop3" + att.FileName);
                Console.WriteLine("附件保存成功！附件名称为：" + att.FileName);
            }
        }

        static void processBody(string bodytype, string body)
        {
            if (body == null) 
            {
                Console.WriteLine(bodytype + ": null");
                return;
            }
            if (body.Length > 1000)
            {
                Console.WriteLine(bodytype + ": " + body.Substring(0, 1000) + "...");
            }
            else
            {
                Console.WriteLine(bodytype + ": " + body);
            }
        }
    }
}