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Delphi ExampleRead Receipt Some e-mail applications, such as Microsoft Office Outlook, employ a read-receipt tracking mechanism. A sender selects the receipt request option prior to sending the message. Upon opening the email, each recipient has the option of notifying the sender that the message was opened and read. However, there is no guarantee that you will get a read-receipt. Some possible reason are that very few e-mail applications or services support read receipts, or simply because users disable the functionality. Those do support read-receipt aren't necessarily compatible with or capable of recognizing requests from a different e-mail service or application Delivery Receipt and Failure Report It is also called a DSN (delivery service notification), which is a request to the recipient’s email server to send you a notification about the delivery of an email you've just sent. The notification takes the form of an email, and will tell you if your delivery succeeded (Delivery Receipt), failed, got delayed (Failure Report). Parse Report For many email campaign applications, the very important task is detecting if the email is received by recipient or not. Parsing the delivery report is the common way to get the email status. EAGetMail .NET class provides a built-in function (GetReport) to parse the report. The following sample demonstrates how to parse the delivery-report. If ReporType is DeliveryReceipt or ReadReceipt, the report probably has only OriginalSender, OriginalRecipient and OriginalMessageID information in the report, it depends on the mail server that generated the report. The following example codes demonstrate how to parse failure delivery report. Code:
// The following example codes demonstrate parsing failure delivery report
// To get full sample projects, please download and install EAGetMail on your machine.
// To run it correctly, please change email server, user, password, folder, file name value to yours
Unit Unit1;
Interface
Uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, EAGetMailObjLib_TLB;
Type
TForm1 = Class(TForm)
Button1: TButton;
Procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
End;
Const
MailServerPop3 = 0;
MailServerImap4 = 1;
FailureReport = 0;
DeliveryReceipt = 1;
ReadReceipt = 2;
Var
Form1: TForm1;
Implementation
{$R *.dfm}
Procedure TForm1.ParseReport(fileName: WideString);
Var
oMail: TMail;
oReport: IMailReport;
oHeaders: IHeaderCollection;
i, count: Integer;
Begin
oMail := TMail.Create(Application);
oMail.LicenseCode := 'TryIt';
oMail.LoadFile( fileName, false );
If Not oMail.IsReport Then
Begin
ShowMessage( 'This is not a report!' );
exit;
End;
oReport := oMail.GetReport();
If oReport.ReportType = DeliveryReceipt Then
ShowMessage( 'This is a deliver receipt!' )
Else If oReport.ReportType = ReadReceipt Then
ShowMessage( 'This is a read receipt!')
Else
ShowMessage( 'This is a failure report!');
// Get original message information
ShowMessage(oReport.OriginalSender);
ShowMessage(oReport.OriginalRecipient);
ShowMessage(oReport.OriginalMessageID);
If oReport.ReportType = FailureReport Then
Begin
ShowMessage( oReport.ErrCode );
ShowMessage( oReport.ErrDescription );
ShowMessage( oReport.OriginalSubject);
ShowMessage( oReport.ReportMTA );
oHeaders := oReport.OriginalHeaders;
// Parse original email headers.
count := oHeaders.Count;
For i := 0 To count-1 Do
Begin
ShowMessage( oHeaders.Item(i).HeaderKey + ':' +
oHeaders.Item(i).HeaderValue);
End;
End;
End;
Procedure TForm1.Button1Click(Sender: TObject);
Begin
Try
ParseReport('c:\my folder\test.eml');
Except
On ep:Exception Do
ShowMessage( 'Error: ' + ep.Message );
End;
End;
End.
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