(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.

Download: Chilkat .NET Assemblies

Chilkat.Email email = new Chilkat.Email();

bool success;

//  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 CreateMdn method is called to create a new
//  MDN email based upon the email object calling CreateMdn.
//  The email object instance used to call CreateMdn 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("someEmail.eml");
if (success != true) {
    textBox1.Text += email.LastErrorText + "\r\n";
    return;
}

//  The MDN created by CreateMdn 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 CreateMdn. This part of the example
//  prepares the XML:
Chilkat.Xml xml = new Chilkat.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.Tag = "DispositionFields";
xml.NewChild2("Disposition","manual-action/MDN-sent-manually; displayed");
xml.NewChild2("Original-Message-ID",email.GetHeaderField("Message-ID"));
xml.NewChild2("Final-Recipient",email.GetToAddr(0));

string xmlStr;
xmlStr = xml.GetXml();

//  The last argument to be passed to CreateMdn 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;
bHeaderOnly = true;

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

//  OK, we're ready to create MDN...
Chilkat.Email mdnEmail = null;

mdnEmail = email.CreateMdn(humanReadableExplanation,xmlStr,bHeaderOnly);

if (!(mdnEmail == null )) {
    //  Show the MIME of the source (original) email:
    textBox1.Text += email.GetMime() + "\r\n";

    textBox1.Text += "**************************************" + "\r\n";

    //  Show the MIME of the MDN email:
    textBox1.Text += mdnEmail.GetMime() + "\r\n";
}
else {
    textBox1.Text += email.LastErrorText + "\r\n";
}

//  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--