Example #1
0
        /// <summary>
        /// Creates Mime message based on UI data.
        /// </summary>
        private Mail_Message CreateMessage()
        {
            Mail_Message msg = new Mail_Message();

            msg.MimeVersion = "1.0";
            msg.MessageID   = MIME_Utils.CreateMessageID();
            msg.Date        = DateTime.Now;
            msg.From        = Mail_h_MailboxList.Parse("From: " + m_pFrom.Text).Addresses;
            msg.To          = new Mail_t_AddressList();
            msg.To.Add(new Mail_t_Mailbox(m_pFolder.User.FullName, m_pFolder.User.FullName + "@localhost"));
            msg.Subject = m_pSubject.Text;

            //--- multipart/mixed -------------------------------------------------------------------------------------------------
            MIME_h_ContentType contentType_multipartMixed = new MIME_h_ContentType(MIME_MediaTypes.Multipart.mixed);

            contentType_multipartMixed.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
            MIME_b_MultipartMixed multipartMixed = new MIME_b_MultipartMixed(contentType_multipartMixed);

            msg.Body = multipartMixed;

            //--- multipart/alternative -----------------------------------------------------------------------------------------
            MIME_Entity        entity_multipartAlternative      = new MIME_Entity();
            MIME_h_ContentType contentType_multipartAlternative = new MIME_h_ContentType(MIME_MediaTypes.Multipart.alternative);

            contentType_multipartAlternative.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
            MIME_b_MultipartAlternative multipartAlternative = new MIME_b_MultipartAlternative(contentType_multipartAlternative);

            entity_multipartAlternative.Body = multipartAlternative;
            multipartMixed.BodyParts.Add(entity_multipartAlternative);

            //--- text/plain ----------------------------------------------------------------------------------------------------
            MIME_Entity entity_text_plain = new MIME_Entity();
            MIME_b_Text text_plain        = new MIME_b_Text(MIME_MediaTypes.Text.plain);

            entity_text_plain.Body = text_plain;
            text_plain.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, m_pText.Text);
            multipartAlternative.BodyParts.Add(entity_text_plain);

            //--- text/html ------------------------------------------------------------------------------------------------------
            MIME_Entity entity_text_html = new MIME_Entity();
            MIME_b_Text text_html        = new MIME_b_Text(MIME_MediaTypes.Text.html);

            entity_text_html.Body = text_html;
            text_html.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, RtfToHtml());
            multipartAlternative.BodyParts.Add(entity_text_html);

            //--- application/octet-stream -----------------------------------------------------------------------------------------------
            foreach (ListViewItem item in m_pAttachments.Items)
            {
                multipartMixed.BodyParts.Add(Mail_Message.CreateAttachment(item.Tag.ToString()));
            }

            return(msg);
        }
Example #2
0
        /// <summary>
        /// Generates message parsing failed message.
        /// </summary>
        /// <param name="message">Message stream.</param>
        /// <returns>Returns message parsing failed message.</returns>
        /// <exception cref="ArgumentNullException">Is raised when <b>message</b> is null reference.</exception>
        public static Mail_Message GenerateBadMessage(Stream message)
        {
            if (message == null)
            {
                throw new ArgumentNullException("message");
            }

            Mail_Message msg = new Mail_Message();

            msg.MimeVersion = "1.0";
            msg.MessageID   = MIME_Utils.CreateMessageID();
            msg.Date        = DateTime.Now;
            msg.From        = new Mail_t_MailboxList();
            msg.From.Add(new Mail_t_Mailbox("system", "system"));
            msg.To = new Mail_t_AddressList();
            msg.To.Add(new Mail_t_Mailbox("system", "system"));
            msg.Subject = "[BAD MESSAGE] Bad message, message parsing failed !";

            //--- multipart/mixed -------------------------------------------------------------------------------------------------
            MIME_h_ContentType contentType_multipartMixed = new MIME_h_ContentType(MIME_MediaTypes.Multipart.mixed);

            contentType_multipartMixed.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
            MIME_b_MultipartMixed multipartMixed = new MIME_b_MultipartMixed(contentType_multipartMixed);

            msg.Body = multipartMixed;

            //--- text/plain ---------------------------------------------------------------------------------------------------
            MIME_Entity entity_text_plain = new MIME_Entity();
            MIME_b_Text text_plain        = new MIME_b_Text(MIME_MediaTypes.Text.plain);

            entity_text_plain.Body = text_plain;
            text_plain.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, "NOTE: Bad message, message parsing failed.\r\n\r\nOriginal message attached as 'data.eml'\r\n");
            multipartMixed.BodyParts.Add(entity_text_plain);

            //--- application/octet-stream --------------------------------------------------------------------------------------
            MIME_Entity entity_application_octet_stream = new MIME_Entity();

            entity_application_octet_stream.ContentDisposition = new MIME_h_ContentDisposition("attachment");
            entity_application_octet_stream.ContentDisposition.Param_FileName = "data.eml";
            MIME_b_Application application_octet_stream = new MIME_b_Application(MIME_MediaTypes.Application.octet_stream);

            entity_application_octet_stream.Body = application_octet_stream;
            application_octet_stream.SetData(message, "base64");
            multipartMixed.BodyParts.Add(entity_application_octet_stream);

            return(msg);
        }
Example #3
0
        public void SendEmail(Mail mail, Setting setting)
        {
            Mail_Message message = new Mail_Message()
            {
                From      = new Mail_t_MailboxList(),
                Subject   = mail.Subject,             //增加主题
                Priority  = mail.Priority.ToString(), //设置优先级
                MessageID = MIME_Utils.CreateMessageID(),
                Date      = mail.CreatedDateTime
            };

            //增加发件人地址
            message.From.Add(new Mail_t_Mailbox(null, mail.From));
            //增加收件人地址
            mail.To.ForEach(address => message.To.Add(new Mail_t_Mailbox(address, address)));

            //增加邮件内容
            MIME_Entity.CreateEntity_Text_Html("Base64", Encoding.Default, mail.Body);

            //增加附件
            if (mail.Attachments != null && mail.Attachments.Count > 0)
            {
                mail.Attachments.ForEach(attachment =>
                {
                    MIME_Entity.CreateEntity_Attachment(attachment.Name);
                });
            }

            using (SMTP_Client smtpClient = new SMTP_Client())
            {
                //设置SMPT服务地址和端口并连接
                smtpClient.Connect(setting.SmtpHostName, setting.SmtpPort);
                //设置Authentication
                smtpClient.Auth(new LumiSoft.Net.AUTH.AUTH_SASL_Client_Login(setting.User.UserName, setting.User.Password));

                using (MemoryStream stream = new MemoryStream())
                {
                    message.ToStream(stream);
                    stream.Position = 0;
                    //发送邮件
                    smtpClient.SendMessage(stream);
                }
            }
        }
Example #4
0
        private Mail_Message CreateMessage()
        {
            Mail_Message mail_Message = new Mail_Message();

            mail_Message.MimeVersion = "1.0";
            mail_Message.MessageID   = MIME_Utils.CreateMessageID();
            mail_Message.Date        = DateTime.Now;
            mail_Message.From        = Mail_h_MailboxList.Parse("From: " + this.m_pFrom.Text).Addresses;
            mail_Message.To          = new Mail_t_AddressList();
            mail_Message.To.Add(new Mail_t_Mailbox(this.m_pFolder.User.FullName, this.m_pFolder.User.FullName + "@localhost"));
            mail_Message.Subject = this.m_pSubject.Text;
            MIME_b_MultipartMixed mIME_b_MultipartMixed = new MIME_b_MultipartMixed(new MIME_h_ContentType(MIME_MediaTypes.Multipart.mixed)
            {
                Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.')
            });

            mail_Message.Body = mIME_b_MultipartMixed;
            MIME_Entity mIME_Entity = new MIME_Entity();
            MIME_b_MultipartAlternative mIME_b_MultipartAlternative = new MIME_b_MultipartAlternative(new MIME_h_ContentType(MIME_MediaTypes.Multipart.alternative)
            {
                Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.')
            });

            mIME_Entity.Body = mIME_b_MultipartAlternative;
            mIME_b_MultipartMixed.BodyParts.Add(mIME_Entity);
            MIME_Entity mIME_Entity2 = new MIME_Entity();
            MIME_b_Text mIME_b_Text  = new MIME_b_Text(MIME_MediaTypes.Text.plain);

            mIME_Entity2.Body = mIME_b_Text;
            mIME_b_Text.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, this.m_pText.Text);
            mIME_b_MultipartAlternative.BodyParts.Add(mIME_Entity2);
            MIME_Entity mIME_Entity3 = new MIME_Entity();
            MIME_b_Text mIME_b_Text2 = new MIME_b_Text(MIME_MediaTypes.Text.html);

            mIME_Entity3.Body = mIME_b_Text2;
            mIME_b_Text2.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, this.RtfToHtml());
            mIME_b_MultipartAlternative.BodyParts.Add(mIME_Entity3);
            foreach (ListViewItem listViewItem in this.m_pAttachments.Items)
            {
                mIME_b_MultipartMixed.BodyParts.Add(MIME_Message.CreateAttachment(listViewItem.Tag.ToString()));
            }
            return(mail_Message);
        }
        private void m_pOk_Click(object sender, EventArgs e)
        {
            Mail_Message mail_Message = new Mail_Message();

            mail_Message.MimeVersion = "1.0";
            mail_Message.MessageID   = MIME_Utils.CreateMessageID();
            mail_Message.Date        = DateTime.Now;
            mail_Message.From        = Mail_h_MailboxList.Parse("From: " + this.m_pFrom.Text).Addresses;
            if (!string.IsNullOrEmpty(this.m_pTo.Text))
            {
                mail_Message.To = Mail_h_AddressList.Parse("To: " + this.m_pTo.Text).Addresses;
            }
            mail_Message.Subject = this.m_pSubject.Text;
            MIME_b_Text mIME_b_Text = new MIME_b_Text(MIME_MediaTypes.Text.plain);

            mail_Message.Body = mIME_b_Text;
            mIME_b_Text.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, this.m_pBodyText.Text);
            this.m_Message    = mail_Message.ToString(new MIME_Encoding_EncodedWord(MIME_EncodedWordEncoding.B, Encoding.UTF8), Encoding.UTF8);
            base.DialogResult = DialogResult.OK;
        }
Example #6
0
        public static Mail_Message GenerateBadMessage(Stream message)
        {
            if (message == null)
            {
                throw new ArgumentNullException("message");
            }
            Mail_Message mail_Message = new Mail_Message();

            mail_Message.MimeVersion = "1.0";
            mail_Message.MessageID   = MIME_Utils.CreateMessageID();
            mail_Message.Date        = DateTime.Now;
            mail_Message.From        = new Mail_t_MailboxList();
            mail_Message.From.Add(new Mail_t_Mailbox("system", "system"));
            mail_Message.To = new Mail_t_AddressList();
            mail_Message.To.Add(new Mail_t_Mailbox("system", "system"));
            mail_Message.Subject = "[BAD MESSAGE] Bad message, message parsing failed !";
            MIME_b_MultipartMixed mIME_b_MultipartMixed = new MIME_b_MultipartMixed(new MIME_h_ContentType(MIME_MediaTypes.Multipart.mixed)
            {
                Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.')
            });

            mail_Message.Body = mIME_b_MultipartMixed;
            MIME_Entity mIME_Entity = new MIME_Entity();
            MIME_b_Text mIME_b_Text = new MIME_b_Text(MIME_MediaTypes.Text.plain);

            mIME_Entity.Body = mIME_b_Text;
            mIME_b_Text.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, "NOTE: Bad message, message parsing failed.\r\n\r\nOriginal message attached as 'data.eml'\r\n");
            mIME_b_MultipartMixed.BodyParts.Add(mIME_Entity);
            MIME_Entity mIME_Entity2 = new MIME_Entity();

            mIME_Entity2.ContentDisposition = new MIME_h_ContentDisposition("attachment");
            mIME_Entity2.ContentDisposition.Param_FileName = "data.eml";
            MIME_b_Application mIME_b_Application = new MIME_b_Application(MIME_MediaTypes.Application.octet_stream);

            mIME_Entity2.Body = mIME_b_Application;
            mIME_b_Application.SetData(message, "base64");
            mIME_b_MultipartMixed.BodyParts.Add(mIME_Entity2);
            return(mail_Message);
        }
Example #7
0
    private Mail_Message CreateMessage(string message)
    {
        Mail_Message m = new Mail_Message();

        m.MimeVersion = "1.0";
        m.Date        = DateTime.Now;
        m.MessageID   = MIME_Utils.CreateMessageID();
        m.From        = Mail_t_MailboxList.Parse(form);
        m.To          = Mail_t_AddressList.Parse(to);
        m.Subject     = subject;


        //--- multipart/alternative -----------------------------------------------------------------------------------------
        MIME_h_ContentType contentType_multipartAlternative = new MIME_h_ContentType(MIME_MediaTypes.Multipart.alternative);

        contentType_multipartAlternative.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
        MIME_b_MultipartAlternative multipartAlternative = new MIME_b_MultipartAlternative(contentType_multipartAlternative);

        m.Body = multipartAlternative;

        //--- text/plain ----------------------------------------------------------------------------------------------------
        MIME_Entity entity_text_plain = new MIME_Entity();
        MIME_b_Text text_plain        = new MIME_b_Text(MIME_MediaTypes.Text.plain);

        entity_text_plain.Body = text_plain;
        text_plain.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, message);
        multipartAlternative.BodyParts.Add(entity_text_plain);

        //--- text/html ------------------------------------------------------------------------------------------------------
        MIME_Entity entity_text_html = new MIME_Entity();
        MIME_b_Text text_html        = new MIME_b_Text(MIME_MediaTypes.Text.html);

        entity_text_html.Body = text_html;
        text_html.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, message);
        multipartAlternative.BodyParts.Add(entity_text_html);

        return(m);
    }
Example #8
0
        private Mail_Message Create_PlainText_Html_Attachment_Image(Dictionary <string, string> tomails, Dictionary <string, string> ccmails, string mailFrom, string mailFromDisplay,
                                                                    string subject, string body, Dictionary <string, string> attachments, string notifyEmail = "", string plaintTextTips = "", bool checkspmail = false)
        {
            Mail_Message msg = new Mail_Message();

            msg.MimeVersion = "1.0";
            msg.MessageID   = MIME_Utils.CreateMessageID();
            msg.Date        = DateTime.Now;
            msg.Subject     = subject;
            msg.From        = new Mail_t_MailboxList();
            msg.From.Add(new Mail_t_Mailbox(mailFromDisplay, mailFrom));
            msg.To = new Mail_t_AddressList();
            foreach (string address in tomails.Keys)
            {
                string displayName = tomails[address];
                msg.To.Add(new Mail_t_Mailbox(displayName, address));
            }
            msg.Cc = new Mail_t_AddressList();
            foreach (string address in ccmails.Keys)
            {
                string displayName = ccmails[address];
                msg.Cc.Add(new Mail_t_Mailbox(displayName, address));
            }


            if (!string.IsNullOrEmpty(notifyEmail))
            {
                msg.DispositionNotificationTo.Add(new Mail_t_Mailbox(notifyEmail, notifyEmail));
            }

            #region MyRegion


            MIME_h_ContentType contentType_multipartMixed = new MIME_h_ContentType(MIME_MediaTypes.Multipart.mixed);
            contentType_multipartMixed.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
            MIME_b_MultipartMixed multipartMixed = new MIME_b_MultipartMixed(contentType_multipartMixed);
            msg.Body = multipartMixed;


            MIME_Entity        entity_multipartAlternative      = new MIME_Entity();
            MIME_h_ContentType contentType_multipartAlternative = new MIME_h_ContentType(MIME_MediaTypes.Multipart.alternative);
            contentType_multipartAlternative.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
            MIME_b_MultipartAlternative multipartAlternative = new MIME_b_MultipartAlternative(contentType_multipartAlternative);
            entity_multipartAlternative.Body = multipartAlternative;
            multipartMixed.BodyParts.Add(entity_multipartAlternative);


            MIME_Entity entity_text_plain = new MIME_Entity();
            MIME_b_Text text_plain        = new MIME_b_Text(MIME_MediaTypes.Text.plain);
            entity_text_plain.Body = text_plain;


            string plainTextBody = "如果你邮件客户端不支持HTML格式,或者你切换到“普通文本”视图,将看到此内容";
            if (!string.IsNullOrEmpty(plaintTextTips))
            {
                plainTextBody = plaintTextTips;
            }

            text_plain.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, plainTextBody);
            multipartAlternative.BodyParts.Add(entity_text_plain);


            string      htmlText         = body;
            MIME_Entity entity_text_html = new MIME_Entity();
            MIME_b_Text text_html        = new MIME_b_Text(MIME_MediaTypes.Text.html);
            entity_text_html.Body = text_html;
            text_html.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, htmlText);
            multipartAlternative.BodyParts.Add(entity_text_html);

            var i = 1;


            foreach (string attach in attachments.Keys)
            {
                string   filename = string.Empty;
                FileInfo fino     = new FileInfo(attach);
                if (mAttRename)
                {
                    filename = mAttachmentName + i.ToString() + fino.Extension;
                }
                else
                {
                    if (!string.IsNullOrEmpty(attachments[attach]))
                    {
                        filename = attachments[attach];
                    }
                    else
                    {
                        filename = fino.Name;
                    }
                }

                if (filename.Length > 30)
                {
                    FileInfo aainfo = new FileInfo(filename);
                    filename = filename.Substring(0, 15) + "_略" + aainfo.Extension;
                }



                filename = MimeUtils.EncodeWord(filename);


                using (var fs = File.OpenRead(attach))
                {
                    var ate = Mail_Message.CreateAttachment(fs, filename);
                    multipartAlternative.BodyParts.Add(ate);
                    fs.Close();
                }
            }
            #endregion

            return(msg);
        }
Example #9
0
        public static Mail_Message Create_PlainText_Html_Attachment_Image(Dictionary <string, string> tomails, Dictionary <string, string> ccmails, string mailFrom, string mailFromDisplay,
                                                                          string subject, string body, Dictionary <string, string> attachments, string notifyEmail = "", string plaintTextTips = "")
        {
            Mail_Message msg = new Mail_Message();

            msg.MimeVersion = "1.0";
            msg.MessageID   = MIME_Utils.CreateMessageID();
            msg.Date        = DateTime.Now;
            msg.Subject     = subject;
            msg.From        = new Mail_t_MailboxList();
            msg.From.Add(new Mail_t_Mailbox(mailFromDisplay, mailFrom));
            msg.To = new Mail_t_AddressList();
            foreach (string address in tomails.Keys)
            {
                string displayName = tomails[address];
                msg.To.Add(new Mail_t_Mailbox(displayName, address));
            }
            msg.Cc = new Mail_t_AddressList();
            foreach (string address in ccmails.Keys)
            {
                string displayName = ccmails[address];
                msg.Cc.Add(new Mail_t_Mailbox(displayName, address));
            }

            //设置回执通知
            if (!string.IsNullOrEmpty(notifyEmail) && IsEmail(notifyEmail))
            {
                msg.DispositionNotificationTo.Add(new Mail_t_Mailbox(notifyEmail, notifyEmail));
            }

            #region MyRegion

            //--- multipart/mixed -----------------------------------
            MIME_h_ContentType contentType_multipartMixed = new MIME_h_ContentType(MIME_MediaTypes.Multipart.mixed);
            contentType_multipartMixed.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
            MIME_b_MultipartMixed multipartMixed = new MIME_b_MultipartMixed(contentType_multipartMixed);
            msg.Body = multipartMixed;

            //--- multipart/alternative -----------------------------
            MIME_Entity        entity_multipartAlternative      = new MIME_Entity();
            MIME_h_ContentType contentType_multipartAlternative = new MIME_h_ContentType(MIME_MediaTypes.Multipart.alternative);
            contentType_multipartAlternative.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
            MIME_b_MultipartAlternative multipartAlternative = new MIME_b_MultipartAlternative(contentType_multipartAlternative);
            entity_multipartAlternative.Body = multipartAlternative;
            multipartMixed.BodyParts.Add(entity_multipartAlternative);

            //--- text/plain ----------------------------------------
            MIME_Entity entity_text_plain = new MIME_Entity();
            MIME_b_Text text_plain        = new MIME_b_Text(MIME_MediaTypes.Text.plain);
            entity_text_plain.Body = text_plain;

            //普通文本邮件内容,如果对方的收件客户端不支持HTML,这是必需的
            string plainTextBody = "如果你邮件客户端不支持HTML格式,或者你切换到“普通文本”视图,将看到此内容";
            if (!string.IsNullOrEmpty(plaintTextTips))
            {
                plainTextBody = plaintTextTips;
            }

            text_plain.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, plainTextBody);
            multipartAlternative.BodyParts.Add(entity_text_plain);

            //--- text/html -----------------------------------------
            string      htmlText         = body;//"<html>这是一份测试邮件,<img src=\"cid:test.jpg\">来自<font color=red><b>LumiSoft.Net</b></font></html>";
            MIME_Entity entity_text_html = new MIME_Entity();
            MIME_b_Text text_html        = new MIME_b_Text(MIME_MediaTypes.Text.html);
            entity_text_html.Body = text_html;
            text_html.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, htmlText);
            multipartAlternative.BodyParts.Add(entity_text_html);

            //--- application/octet-stream -------------------------
            WebClient client = new WebClient();
            foreach (string attach in attachments.Keys)
            {
                try
                {
                    byte[] bytes = client.DownloadData(attachments[attach]);
                    using (MemoryStream stream = new MemoryStream(bytes))
                    {
                        multipartMixed.BodyParts.Add(Mail_Message.CreateAttachment(stream, attach));
                    }
                }
                catch (Exception ex)
                {
                    throw ex;
                }
            }

            #endregion

            return(msg);
        }
Example #10
0
        private static Mail_Message Create_PlainText_Html_Attachment_Image(string tomail,
                                                                           string mailFrom, string mailFromDisplay,
                                                                           string subject, string body)
        {
            Mail_Message msg = new Mail_Message();

            msg.MimeVersion = "1.0";
            msg.MessageID   = MIME_Utils.CreateMessageID();
            msg.Date        = DateTime.Now;
            msg.Subject     = subject;
            msg.From        = new Mail_t_MailboxList();
            msg.From.Add(new Mail_t_Mailbox("绘学霸", mailFrom));
            msg.To = new Mail_t_AddressList();
            msg.To.Add(new Mail_t_Mailbox(tomail, tomail));

            //设置回执通知
            string notifyEmail = "*****@*****.**";

            if (!string.IsNullOrEmpty(notifyEmail))
            {
                msg.DispositionNotificationTo = new Mail_t_MailboxList();
                msg.DispositionNotificationTo.Add(new Mail_t_Mailbox(notifyEmail, notifyEmail));
            }

            #region MyRegion

            //--- multipart/mixed -----------------------------------
            MIME_h_ContentType contentType_multipartMixed = new MIME_h_ContentType(MIME_MediaTypes.Multipart.mixed);
            contentType_multipartMixed.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
            MIME_b_MultipartMixed multipartMixed = new MIME_b_MultipartMixed(contentType_multipartMixed);
            msg.Body = multipartMixed;

            //--- multipart/alternative -----------------------------
            MIME_Entity        entity_multipartAlternative      = new MIME_Entity();
            MIME_h_ContentType contentType_multipartAlternative = new MIME_h_ContentType(MIME_MediaTypes.Multipart.alternative);
            contentType_multipartAlternative.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
            MIME_b_MultipartAlternative multipartAlternative = new MIME_b_MultipartAlternative(contentType_multipartAlternative);
            entity_multipartAlternative.Body = multipartAlternative;
            multipartMixed.BodyParts.Add(entity_multipartAlternative);

            //--- text/plain ----------------------------------------
            MIME_Entity entity_text_plain = new MIME_Entity();
            MIME_b_Text text_plain        = new MIME_b_Text(MIME_MediaTypes.Text.plain);
            entity_text_plain.Body = text_plain;

            //普通文本邮件内容,如果对方的收件客户端不支持HTML,这是必需的
            string plainTextBody = "如果你邮件客户端不支持HTML格式,或者你切换到“普通文本”视图,将看到此内容";

            /*
             * if (!string.IsNullOrEmpty(plaintTextTips))
             * {
             *  plainTextBody = "回执信息";
             * }
             */
            text_plain.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, plainTextBody);
            multipartAlternative.BodyParts.Add(entity_text_plain);

            //--- text/html -----------------------------------------
            string      htmlText         = body;
            MIME_Entity entity_text_html = new MIME_Entity();
            MIME_b_Text text_html        = new MIME_b_Text(MIME_MediaTypes.Text.html);
            entity_text_html.Body = text_html;
            text_html.SetText(MIME_TransferEncodings.QuotedPrintable, Encoding.UTF8, htmlText);
            multipartAlternative.BodyParts.Add(entity_text_html);
            #endregion
            return(msg);
        }
        public void Send(ChannelMessage message)
        {
            var creds = CredentialsProvider.GetCredentials().ToNetworkCredential();

            Mail_Message msg = new Mail_Message();

            msg.MimeVersion = "1.0";
            msg.MessageID   = MIME_Utils.CreateMessageID();
            msg.Subject     = message.Context;
            msg.From        = message.From.ToMailBoxList();
            msg.ReplyTo     = message.ReturnTo == null?
                              message.From.ToAddressList() : message.ReturnTo.ToAddressList();

            if (String.IsNullOrEmpty(message.InReplyTo) == false)
            {
                msg.InReplyTo = message.InReplyTo;
            }

            msg.To = new Mail_t_AddressList();
            foreach (var address in message.To)
            {
                msg.To.Add(address.ToMailBox());
            }

            msg.Cc = new Mail_t_AddressList();
            foreach (var address in message.CC)
            {
                msg.Cc.Add(address.ToMailBox());
            }

            //--- multipart/mixed -------------------------------------------------------------------------------------------------
            MIME_h_ContentType contentType_multipartMixed = new MIME_h_ContentType(MIME_MediaTypes.Multipart.mixed);

            contentType_multipartMixed.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
            MIME_b_MultipartMixed multipartMixed = new MIME_b_MultipartMixed(contentType_multipartMixed);

            msg.Body = multipartMixed;

            //--- multipart/alternative -----------------------------------------------------------------------------------------
            MIME_Entity        entity_multipartAlternative      = new MIME_Entity();
            MIME_h_ContentType contentType_multipartAlternative = new MIME_h_ContentType(MIME_MediaTypes.Multipart.alternative);

            contentType_multipartAlternative.Param_Boundary = Guid.NewGuid().ToString().Replace('-', '.');
            MIME_b_MultipartAlternative multipartAlternative = new MIME_b_MultipartAlternative(contentType_multipartAlternative);

            entity_multipartAlternative.Body = multipartAlternative;
            multipartMixed.BodyParts.Add(entity_multipartAlternative);

            //--- text/plain ----------------------------------------------------------------------------------------------------
            MIME_Entity entity_text_plain = new MIME_Entity();
            MIME_b_Text text_plain        = new MIME_b_Text(MIME_MediaTypes.Text.plain);

            entity_text_plain.Body = text_plain;
            // Add text body if there is any
            if (message.BodyText != null && message.BodyText.Length > 0)
            {
                var bodyText = message.BodyText.ReadString();

                // Make sure there is a newline at the end of our text, otherwise it will screw up
                // our multipart data format
                if (!bodyText.EndsWith(Environment.NewLine))
                {
                    bodyText = bodyText + Environment.NewLine;
                }

                text_plain.SetText(MIME_TransferEncodings.SevenBit, Encoding.UTF8, bodyText);
            }

            multipartAlternative.BodyParts.Add(entity_text_plain);

            //--- text/html ------------------------------------------------------------------------------------------------------
            MIME_Entity entity_text_html = new MIME_Entity();
            MIME_b_Text text_html        = new MIME_b_Text(MIME_MediaTypes.Text.html);

            entity_text_html.Body = text_html;
            if (message.BodyHtml != null && message.BodyHtml.Length > 0)
            {
                var bodyHtml = message.BodyHtml.ReadString();

                // Make sure there is a newline at the end of our text, otherwise it will screw up
                // our multipart data format
                if (!bodyHtml.EndsWith(Environment.NewLine))
                {
                    bodyHtml = bodyHtml + Environment.NewLine;
                }

                text_html.SetText(MIME_TransferEncodings.SevenBit, Encoding.UTF8, bodyHtml);
            }

            multipartAlternative.BodyParts.Add(entity_text_html);

            foreach (var channelAttachment in message.Attachments)
            {
                MIME_b_Application attachmentBody = new MIME_b_Application(MIME_MediaTypes.Application.octet_stream);
                MIME_Entity        attachment     = new MIME_Entity();
                attachment.Body = attachmentBody;

                // Has to happen before the following lines of code
                multipartMixed.BodyParts.Add(attachment);

                attachment.ContentType            = new MIME_h_ContentType(MimeHelper.GetMimeType(channelAttachment.Filename));
                attachment.ContentType.Param_Name = channelAttachment.Filename;

                MIME_h_ContentDisposition contentDisposition = new MIME_h_ContentDisposition(DispositionTypeNames.Attachment);
                contentDisposition.Param_FileName = channelAttachment.Filename;

                attachment.ContentDisposition      = contentDisposition;
                attachment.ContentTransferEncoding = TransferEncoding.Base64.ToString();

                attachmentBody.SetData(channelAttachment.ContentStream, MIME_TransferEncodings.Base64);
            }

            // Inject headers
            if (!String.IsNullOrEmpty(message.MessageIdentifier))
            {
                msg.Header.Add(new MIME_h_Unstructured("x-i2mp-messageid", message.MessageIdentifier));
            }

            //if (!String.IsNullOrEmpty(message.Metadata.i2mpFlow))
            //    msg.Header.Add(new MIME_h_Unstructured("x-i2mp-flow", message.Metadata.i2mpFlow));

            //if (!String.IsNullOrEmpty(message.Metadata.i2mpReference))
            //    mailMessage.Headers.Add("X-i2mp-ref", message.Metadata.i2mpReference);

            //if (!String.IsNullOrEmpty(message.Metadata.i2mpSequence))
            //    mailMessage.Headers.Add("X-i2mp-seq", message.Metadata.i2mpSequence);

            //if (!String.IsNullOrEmpty(message.Metadata.i2mpRelation))
            //    mailMessage.Headers.Add("X-i2mp-rel", message.Metadata.i2mpRelation);

            //if (!String.IsNullOrEmpty(message.Metadata.i2mpRelationId))
            //    mailMessage.Headers.Add("X-i2mp-rel-id", message.Metadata.i2mpRelationId);


            // Send message
            try
            {
                SMTP_Client client = new SMTP_Client();

                if ("/Settings/Channels/LoggerEnabled".AsKey(false))
                {
                    client.Logger = new LumiSoft.Net.Log.Logger();
                }

                // todo push this logic into the smtp client implementation itself
                if (Hostname == "smtp.live.com")
                {
                    // Hack for hotmail, first do a connect with no secured channel,
                    // then a STARTTLS
                    client.Connect(Hostname, Port, false);
                    client.StartTLS();
                }
                else
                {
                    client.Connect(Hostname, Port, IsSecured);
                }

                client.Authenticate(creds.UserName, creds.Password);

                using (MemoryStream ms = new MemoryStream())
                {
                    client.MailFrom(msg.From[0].Address, -1);

                    msg.ToStream(ms,
                                 new MIME_Encoding_EncodedWord(MIME_EncodedWordEncoding.Q, Encoding.UTF8), Encoding.UTF8);

                    // Reset stream
                    ms.Seek(0, SeekOrigin.Begin);

                    foreach (var address in message.To)
                    {
                        client.RcptTo(address.Address);
                    }

                    foreach (var address in message.CC)
                    {
                        client.RcptTo(address.Address);
                    }

                    foreach (var address in message.BCC)
                    {
                        client.RcptTo(address.Address);
                    }

                    try
                    {
                        client.SendMessage(ms);
                    }
                    finally
                    {
                        client.Dispose();
                    }
                }
            }
            catch (SmtpFailedRecipientsException e)
            {
                throw new ChannelFunctionalException(e.Message, e)
                      {
                          DoNotRetry = true
                      };
            }
            catch (SmtpException e)
            {
                throw new ChannelFunctionalException(e.Message, e);
            }
            catch (Exception e)
            {
                throw new ChannelFunctionalException(e.Message, e);
            }
        }