POP3 to SMTP Forwarder

Read a POP3 mailbox and forwards the email to another email address, keeping the recipients in the original email the same.

Download Chilkat C++ Libraries for VC++ 8.0 / Win32

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#include <CkMailMan.h>
#include <CkStringArray.h>
#include <CkString.h>

void ChilkatSample(void)
    {
    //  The mailman object is used for receiving (POP3)
    //  and sending (SMTP) email.
    CkMailMan mailman;

    //  Any string argument automatically begins the 30-day trial.
    bool success;
    success = mailman.UnlockComponent("30-day trial");
    if (success != true) {
        printf("Component unlock failed\n");
        return;
    }

    //  Set the POP3 server's hostname
    mailman.put_MailHost("mail.chilkatsoft.com");

    //  Set the POP3 login/password.
    mailman.put_PopUsername("matt@chilkatsoft.com");
    mailman.put_PopPassword("****");

    CkStringArray *saUidls = 0;

    //  The the UIDLs for all email in the POP3 mailbox.
    saUidls = mailman.GetUidls();
    if (saUidls == 0 ) {
        printf("%s\n",mailman.lastErrorText());
        return;
    }

    CkStringArray *saMime = 0;

    //  Download the email from the server.  Call FetchMultipleMime
    //  because we don't want to load the emails into email objects.
    //  (We'll delete the emails that are forwarded without error.)
    saMime = mailman.FetchMultipleMime(*saUidls);

    if (saMime == 0 ) {
        delete saUidls;
        printf("%s\n",mailman.lastErrorText());
        return;
    }

    //  Set the SMTP hostname for sending.
    mailman.put_SmtpHost("mail.chilkatsoft.com");
    mailman.put_SmtpUsername("admin@chilkatsoft.com");
    mailman.put_SmtpPassword("****");

    int i;
    CkString strMime;
    int n;
    n = saMime->get_Count();

    CkString fromAddr;
    CkString toAddr;
    fromAddr = "matt@chilkatsoft.com";
    toAddr = "admin@chilkatsoft.com";

    bool bAllOk;
    bAllOk = true;

    if (n > 0) {
        for (i = 0; i <= n - 1; i++) {

            strMime = saMime->getString(i);

            //  Forward the email.
            success = mailman.SendMime(fromAddr,toAddr,strMime);
            if (success != true) {
                bAllOk = false;
                printf("%s\n",mailman.lastErrorText());
                break;
            }

        }

    }

    //  Remove the emails in saUidls from the POP3 server.
    if (bAllOk == true) {
        success = mailman.DeleteMultiple(*saUidls);
        if (success != true) {
            printf("%s\n",mailman.lastErrorText());
        }

    }

    delete saMime;
    delete saUidls;

    }