Parse Email in Visual C++¶

In previous section, I introduced how to download email with background service. In this section, I will introduce how to parse email in Visual C++.

Sections:

Introduction
[Visual C++ Example - Parse email]

Introduction¶

After you received the emails to the local folder, we can use the following code to parse the email now. The following code demonstrates how to parse from, to, cc, subject, body text, attachments of all emails file received by previous sample.

Note

Remarks: All of examples in this section are based on first section: A simple Visual C++ project. To compile and run the following example codes successfully, please click here to learn how to create the test project and add reference to your project.

[Visual C++ Example - Parse email]¶

The following example codes demonstrate how to use EAGetMail POP3 component to parse email sender, to, cc, subject, body text and attachments.

Note

To get the full sample projects, please refer to Samples section.

#include "stdafx.h"
#include <Windows.h>

#include "eagetmailobj.tlh"
using namespace EAGetMailObjLib;

void ParseEmail(LPCTSTR lpszFile)
{
    try
    {
        IMailPtr oMail = NULL;
        oMail.CreateInstance(__uuidof(EAGetMailObjLib::Mail));
        oMail->LicenseCode = _T("TryIt");

        oMail->LoadFile(lpszFile, VARIANT_FALSE);

        // Parse email sender
        _tprintf(_T("From: %s\r\n"), (const TCHAR*)oMail->From->Address);

        IAddressCollectionPtr addressList = oMail->ToList;
        for(long i = 0; i < addressList->Count; i++)
        {
            IMailAddressPtr oAddr = addressList->GetItem(i);
            _tprintf(_T("To: %s<%s>\r\n"), (TCHAR*)oAddr->Name, (TCHAR*)oAddr->Address);
        }

        addressList = oMail->CcList;
        for(long i = 0; i < addressList->Count; i++)
        {
            IMailAddressPtr  oAddr = addressList->GetItem(i);
            _tprintf(_T("Cc: %s<%s>\r\n"), (TCHAR*)oAddr->Name, (TCHAR*)oAddr->Address);
        }

        // Parse email subject
        _tprintf(_T("Subject: %s\r\n"), (const TCHAR*)oMail->Subject);

        // Parse email text body
        _tprintf(_T("TextBody: %s\r\n"), (const TCHAR*)oMail->TextBody);

        // Parse email HTML body
        _tprintf(_T("HtmlBody: %s\r\n"), (const TCHAR*)oMail->HtmlBody);

        // Parse attachment
        IAttachmentCollectionPtr attachments = oMail->AttachmentList;
        for(long i = 0; i < attachments->Count; i++)
        {
            IAttachmentPtr pAtt = attachments->GetItem(i);
            _tprintf(_T("Attachment: %s\r\n"), (const TCHAR*)pAtt->Name);
        }
    }
    catch(_com_error &ep)
    {
        _tprintf(_T("Error: %s\r\n"), (const TCHAR*)ep.Description());
    }
}

int _tmain(int argc, _TCHAR* argv[])
{
    // Initialize COM environment
    ::CoInitialize(NULL);

    ParseEmail(_T("c:\\my folder\\test.eml"));

    return 0;
}

TextBody and HtmlBody

Not every email has both text/plain body text and html body text. However, Mail object provides both TextBody and HtmlBody properties smartly. If the email has only text/plain body, then Mail object converts the text/plain body to html body automatically; if the email has only html body, then Mail object converts the html body to text/plain body automatically.

Next Section

At next section I will introduce how to verify digital signature and decrypt email.

Tutorial Index

Parse Email in Visual C++¶

Introduction¶

[Visual C++ Example - Parse email]¶

Share

See Also