EAGetMail POP3 & IMAP4 Component > Developer Center > Example Codes > C# > Parse Failure Delivery Report (NDS)

C# - Parse Failure Delivery Report (NDS)

Read 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.

Installation

Before you can use the following sample codes, you should download the EAGetMail Installer and install it on your machine at first.

Add Reference of EAGetMail to Visual Stuido C#.NET Project

To use EAGetMail POP3 & IMAP Component in your project, the first step is "Add reference of EAGetMail to your project". Please create/open your project with Visual Studio.NET, then choose menu->"Project"->"Add Reference"->".NET"->"Browse...", and choose the EAGetMail{version}.dll from your disk, click "Open"->"OK", the reference of EAGetMail will be added to your project, and you can start to use EAGetMail to retrieve email and parse email in your project.

add reference in c#

Because EAGetMail has separate builds for .Net Framework, please refer to the following table and choose the correct dll.

Separate builds of run-time assembly for .Net Framework 1.1, 2.0, 3.5, 4.0 and .Net Compact Framework 2.0, 3.5.

File	.NET Framework Version
EAGetMail.dll	Built with .NET Framework 1.1 It requires .NET Framework 1.1, 2.0, 3.5 or later version.
EAGetMail20.dll	Built with .NET Framework 2.0 It requires .NET Framework 2.0, 3.5 or later version.
EAGetMail35.dll	Built with .NET Framework 3.5 It requires .NET Framework 3.5 or later version.
EAGetMail40.dll	Built with .NET Framework 4.0 It requires .NET Framework 4.0 or later version.
EAGetMailCF20.dll	Built with .NET Compact Framework 2.0 It requires .NET Compact Framework 2.0, 3.5 or later version.
EAGetMailCF35.dll	Built with .NET Compact Framework 3.5 It requires .NET Compact Framework 3.5 or later version.

// 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

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.IO;

// Add EAGetMail namespace
using EAGetMail;

namespace receiveemail
{
    class Program
    {
        static void ParseReport(string emlFile)
        {
            Mail oMail = new Mail("TryIt");
            oMail.Load(emlFile, false);

            if (!oMail.IsReport)
            {
                Console.WriteLine("This is not a delivery report.");
                return;
            }

            MailReport oReport = oMail.GetReport();
            switch (oReport.ReportType)
            {
                case DeliveryReportType.DeliveryReceipt:
                    Console.WriteLine( "This is a delivery receipt!" );
                    break;
                case DeliveryReportType.ReadReceipt:
                    Console.WriteLine( "This is a read receipt!" );
                    break;
                default:
                    Console.WriteLine( "This is a failure report!" );
                    break;
            }

            Console.WriteLine( "OriginalSender: {0}", oReport.OriginalSender );
            Console.WriteLine( "OriginalRecipient: {0}", oReport.OriginalRecipient );
            Console.WriteLine( "OriginalMessageID: {0}", oReport.OriginalMessageID );

            if( oReport.ReportType == DeliveryReportType.FailureReport )
            {
                Console.WriteLine( "ErrCode: {0}", oReport.ErrCode );
                Console.WriteLine( "ErrDescription: {0}", oReport.ErrDescription);
                Console.WriteLine( "OriginalSubject: {0}", oReport.OriginalSubject );
                Console.WriteLine( "ReportMTA: {0}", oReport.ReportMTA );
                Console.WriteLine( oReport.OriginalHeaders.ToString());
            }
        }

        static void Main(string[] args)
        {
            ParseReport( "c:\\my folder\\test.eml" );
        }
    }
}

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C# - Parse Failure Delivery Report (NDS)

Read Receipt

Delivery Receipt and Failure Report

Parse Report

C# Email Examples

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