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Unicode C++

Create MDN (Message Disposition Notification) Email

Demonstrates how to create a MDN (Message Disposition Notification) Email having the format as defined in RFC 3798.

Chilkat Unicode C++ Downloads

Unicode C++
#include <CkEmailW.h>
#include <CkXmlW.h>

void ChilkatSample(void)
    {
    bool success = false;

    CkEmailW email;

    //  An MDN can be used to notify the
    //  sender of a message of any of several conditions that may occur after
    //  successful delivery, such as display of the message contents,
    //  printing of the message, deletion (without display) of the message,
    //  or the recipient's refusal to provide MDNs.
    //  (for more information, see RFC 3798)

    //  IMPORTANT:
    //  Note: Please be careful in sending automated MDN's.
    //  It is important to be aware of an issue called "backscatter".
    //  See the Wikipedia article here:  http://en.wikipedia.org/wiki/Backscatter_%28e-mail%29

    //  The ToMdn method is called to create a new
    //  MDN email based upon the email object calling ToMdn.
    //  The email object instance used to call ToMdn would
    //  typically be an email received from a POP3 or IMAP server.
    //  In this case, to simplify the example, we'll load the email
    //  from a .eml file.

    //  This example will be creating a MDN for "someEmail.eml"
    success = email.LoadEml(L"someEmail.eml");
    if (success == false) {
        wprintf(L"%s\n",email.lastErrorText());
        return true;
    }

    //  The MDN created by ToMdn will contain a 
    //  "message/disposition-notification" MIME sub-part that will
    //  be composed of a number of name-value pairs.
    //  See RFC 3798  ( http://tools.ietf.org/html/rfc3798 )
    //  The name-value content for this part is passed
    //  as XML to ToMdn. This part of the example
    //  prepares the XML:
    CkXmlW xml;

    //  For this example, we're just adding a few name-value pairs.
    //  These should not be considered to be correct, required or
    //  even sensible -- they are simply for the example.  
    xml.put_Tag(L"DispositionFields");
    xml.NewChild2(L"Disposition",L"manual-action/MDN-sent-manually; displayed");
    xml.NewChild2(L"Original-Message-ID",email.getHeaderField(L"Message-ID"));
    xml.NewChild2(L"Final-Recipient",email.getToAddr(0));

    const wchar_t *xmlStr = xml.getXml();

    //  The last argument to be passed to ToMdn will be a boolean
    //  indicating whether to include the entire MIME of the calling
    //  email object in the MDN, or only the header.
    //  It may make sense to include the entire email for small emails,
    //  but for large emails (with large attachments) it's probably
    //  best to make the MDN header-only.
    bool bHeaderOnly = true;

    //  The first argument to be passed to ToMdn will
    //  be a human-readable explanation that will be placed
    //  into the 1st MIME part of the MDN (see RFC 3798).
    const wchar_t *humanReadableExplanation = L"Blah blah blah.  Your message has been received and displayed. Blah blah blah";

    //  OK, we're ready to create MDN...
    CkEmailW mdnEmail;

    success = email.ToMdn(humanReadableExplanation,xmlStr,bHeaderOnly,mdnEmail);
    if (success == false) {
        wprintf(L"%s\n",email.lastErrorText());
        return true;
    }

    //  Show the MIME of the source (original) email:
    wprintf(L"%s\n",email.getMime());

    wprintf(L"**************************************\n");

    //  Show the MIME of the MDN email:
    wprintf(L"%s\n",mdnEmail.getMime());

    //  Sample output showing the MIME of the original email,
    //  and the MDN email created based upon it:

    //  X-Account-Key: account2
    //  X-UIDL: 0D154945439D42BD80F180F6D9DE4D82
    //  Received: with MailEnable Postoffice Connector;
    //  	 Tue, 21 Jun 2011 09:21:23 -0400
    //  Received: from qmta14.emeryville.ca.mail.comcast.net ([76.96.227.212]) by chilkatsoft.com with MailEnable ESMTP;
    //  	 Tue, 21 Jun 2011 09:21:22 -0400
    //  Received: from omta03.emeryville.ca.mail.comcast.net ([76.196.30.27]) by qmta14.emeryville.ca.mail.comcast.net with comcast id yd4k1g0050b6N64AEdLW9x;
    //  	 Tue, 21 Jun 2011 13:20:30 +0000
    //  Received: from [127.0.0.1] ([67.175.202.103]) by omta03.emeryville.ca.mail.comcast.net with comcast id ydLV1g00n2EMkZ78PdLWxi;
    //  	 Tue, 21 Jun 2011 13:20:31 +0000
    //  Message-ID: <4E009AA4.3090205@chilkatsoft.com>
    //  Date: Tue, 21 Jun 2011 08:20:36 -0500
    //  From: Chilkat Software <admin@chilkatsoft.com>
    //  User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10
    //  MIME-Version: 1.0
    //  To: Chilkat Support <support@chilkatsoft.com>
    //  Subject: test 123
    //  Content-Type: text/plain; charset=ISO-8859-1; format=flowed
    //  Content-Transfer-Encoding: 7bit
    //  Return-Path: <>
    //  X-Antivirus: avast! (VPS 110621-0, 06/21/2011), Inbound message
    //  X-Antivirus-Status: Clean
    //  
    //  This is a test 123
    //  
    //  
    //  
    //  **************************************
    //  Content-Type: multipart/report;
    //  	 report-type=disposition-notification;
    //  	 boundary="------------000802010206080606030808"
    //  
    //  --------------000802010206080606030808
    //  Content-Type: text/plain
    //  Content-Transfer-Encoding: 7bit
    //  
    //  Blah blah blah.  Your message has been received and displayed. Blah blah blah
    //  --------------000802010206080606030808
    //  Content-Type: message/disposition-notification
    //  
    //  Disposition: manual-action/MDN-sent-manually; displayed
    //  Original-Message-ID: <4E009AA4.3090205@chilkatsoft.com>
    //  Final-Recipient: support@chilkatsoft.com
    //  
    //  --------------000802010206080606030808
    //  Content-Type: text/rfc822-headers
    //  
    //  X-Account-Key: account2
    //  X-UIDL: 0D154945439D42BD80F180F6D9DE4D82
    //  Received: with MailEnable Postoffice Connector;
    //  	 Tue, 21 Jun 2011 09:21:23 -0400
    //  Received: from qmta14.emeryville.ca.mail.comcast.net ([76.96.227.212]) by chilkatsoft.com with MailEnable ESMTP;
    //  	 Tue, 21 Jun 2011 09:21:22 -0400
    //  Received: from omta03.emeryville.ca.mail.comcast.net ([76.196.30.27]) by qmta14.emeryville.ca.mail.comcast.net with comcast id yd4k1g0050b6N64AEdLW9x;
    //  	 Tue, 21 Jun 2011 13:20:30 +0000
    //  Received: from [127.0.0.1] ([67.175.202.103]) by omta03.emeryville.ca.mail.comcast.net with comcast id ydLV1g00n2EMkZ78PdLWxi;
    //  	 Tue, 21 Jun 2011 13:20:31 +0000
    //  Message-ID: <4E009AA4.3090205@chilkatsoft.com>
    //  Date: Tue, 21 Jun 2011 08:20:36 -0500
    //  From: Chilkat Software <admin@chilkatsoft.com>
    //  User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10
    //  MIME-Version: 1.0
    //  To: Chilkat Support <support@chilkatsoft.com>
    //  Subject: test 123
    //  Content-Type: text/plain; charset=ISO-8859-1; format=flowed
    //  Content-Transfer-Encoding: 7bit
    //  Return-Path: <>
    //  X-Antivirus: avast! (VPS 110621-0, 06/21/2011), Inbound message
    //  X-Antivirus-Status: Clean
    //  --------------000802010206080606030808--
    //  
    //
    }