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Delphi ActiveX

Create MDN (Message Disposition Notification) Email

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

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var
success: Integer;
email: TChilkatEmail;
xml: TChilkatXml;
xmlStr: WideString;
bHeaderOnly: Integer;
humanReadableExplanation: WideString;
mdnEmail: TChilkatEmail;

begin
success := 0;

email := TChilkatEmail.Create(Self);

//  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('someEmail.eml');
if (success = 0) then
  begin
    Memo1.Lines.Add(email.LastErrorText);
    Exit;
  end;

//  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:
xml := TChilkatXml.Create(Self);

//  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));

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.
bHeaderOnly := 1;

//  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).
humanReadableExplanation := 'Blah blah blah.  Your message has been received and displayed. Blah blah blah';

//  OK, we're ready to create MDN...
mdnEmail := TChilkatEmail.Create(Self);

success := email.ToMdn(humanReadableExplanation,xmlStr,bHeaderOnly,mdnEmail.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(email.LastErrorText);
    Exit;
  end;

//  Show the MIME of the source (original) email:
Memo1.Lines.Add(email.GetMime());

Memo1.Lines.Add('**************************************');

//  Show the MIME of the MDN email:
Memo1.Lines.Add(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--
//  
//