.Net接受邮件的两种方法（imap与pop3）

1.引用LumiSoft.Net.dll（可到官网下载最新版）

2.使用pop3接收邮件

   添加引用

using LumiSoft.Net.POP3.Client;
using LumiSoft.Net.Mime;

  

  if (String.Compare(sSERVICE, "pop3", true) == 0)
        {
            using (POP3_Client pop3 = new POP3_Client())
            {
                //与Pop3服务器建立连接
                pop3.Connect(sSERVER_URL, nPORT, false);
                //验证身份
                pop3.Authenticate(sEMAIL_USER, sEMAIL_PASSWORD, false);
                //获取邮件信息列表
                POP3_ClientMessageCollection infos = pop3.Messages;

                foreach (POP3_ClientMessage info in infos)
                {
                    byte[] bytes = info.MessageToByte();
                    Mime mime = Mime.Parse(bytes);
                   //存库
                    SaveEmail(mime.MainEntity.Subject, mime.MainEntity.Date, mime.BodyText, mime.BodyHtml,
                                  mime.MainEntity.From.ToAddressListString(), mime.MainEntity.To.ToAddressListString(),
                                  mime.MainEntity.Cc == null ? string.Empty : mime.MainEntity.Cc.ToAddressListString(),
                                  mime.MainEntity.Bcc == null ? string.Empty : mime.MainEntity.Bcc.ToAddressListString(),
                                  Sql.ToInteger(info.UID));
                }
            }
        }

2.使用imap接收邮件

   添加引用

using LumiSoft.Net.IMAP.Client;
using LumiSoft.Net.IMAP;
using LumiSoft.Net.Mail;

 if (String.Compare(sSERVICE, "imap", true) == 0)
        {
            IMAP_Client client = new IMAP_Client();
            try
            {
                //与imap服务器建立连接
                client.Connect(sSERVER_URL, nPORT, false);
                //验证身份
                client.Login(sEMAIL_USER, sEMAIL_PASSWORD);
                client.SelectFolder("INBOX");
                IMAP_Client_FetchHandler fetchHandler = new IMAP_Client_FetchHandler();
                //获取未读邮件的UID
                int[] unseen_ids = client.Search(false, "UTF-8", "unseen");
                IMAP_t_SeqSet sequence = IMAP_t_SeqSet.Parse(string.Join(",", unseen_ids));
                var items = new IMAP_t_Fetch_i[]
                                              {
                                                  new IMAP_t_Fetch_i_Envelope(),
                                                  new IMAP_t_Fetch_i_Uid(),
                                                  new IMAP_t_Fetch_i_Flags(),
                                                  new IMAP_t_Fetch_i_InternalDate(),
                                                  new IMAP_t_Fetch_i_Rfc822()
                                              };
                //遍历未读邮件
                client.Fetch(false, sequence, items, (s, e) =>
                {
                    try
                    {
                        var email = e.Value as IMAP_r_u_Fetch;
                        if (email.Rfc822 != null)
                        {
                            email.Rfc822.Stream.Position = 0;
                            var mine = Mail_Message.ParseFromStream(email.Rfc822.Stream);
                            email.Rfc822.Stream.Close();
                            SaveEmail(email.Envelope.Subject, email.InternalDate.Date, mine.BodyText, mine.BodyHtmlText,
                                    mine.From.ToString(), mine.To.ToString(),
                                    mine.Cc == null ? string.Empty : mine.Cc.ToString(),
                                    mine.Bcc == null ? string.Empty : mine.Bcc.ToString(),
                                    Sql.ToInteger(email.UID.UID));
                        }
                    }
                    catch (Exception ex)
                    {
                        lblError.Text = "Handle-Err:" + ex.Message;
                    }
                });
            }
            catch (Exception ex)
            {
                lblError.Text = ex.Message;
            }
        }

 注：

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