(Unicode C++) Process New Email by Scanning for Senders

Scan email and save application-selected emails to EML files with unique filenames.

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#include <CkImapW.h>
#include <CkMessageSetW.h>
#include <CkEmailBundleW.h>
#include <CkEmailW.h>

void ChilkatSample(void)
    {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkImapW imap;

    // Connect to an IMAP server.
    // Use TLS
    imap.put_Ssl(true);
    imap.put_Port(993);
    bool success = imap.Connect(L"imap.someMailServer.com");
    if (success != true) {
        wprintf(L"%s\n",imap.lastErrorText());
        return;
    }

    // Login
    success = imap.Login(L"myLogin",L"myPassword");
    if (success != true) {
        wprintf(L"%s\n",imap.lastErrorText());
        return;
    }

    // Select an IMAP mailbox
    success = imap.SelectMailbox(L"Inbox");
    if (success != true) {
        wprintf(L"%s\n",imap.lastErrorText());
        return;
    }

    CkMessageSetW *messageSet = 0;
    // We can choose to fetch UIDs or sequence numbers.
    bool fetchUids = true;

    // Fetch messages from the mailbox using a search criteria.
    // This example finds NEW emails: these are emails that have the RECENT flag set, but not the SEEN flag:
    messageSet = imap.Search(L"NEW",fetchUids);
    if (imap.get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",imap.lastErrorText());
        return;
    }

    // This example will download headers, and then download
    // the full email for those emails sent from a contact
    // in our database.

    // When downloading headers, each email object contains
    // (obviously) the headers, but the body will be missing.
    // Also, attachments will not be included.  However, it is
    // possible to get information about the attachments
    // as well as the complete size of the email.
    CkEmailBundleW *bundle = 0;
    bundle = imap.FetchHeaders(*messageSet);
    if (imap.get_LastMethodSuccess() == false) {
        delete messageSet;
        wprintf(L"%s\n",imap.lastErrorText());
        return;
    }

    // Loop over the email objects...
    int i = 0;
    int numEmails = bundle->get_MessageCount();
    while (i < numEmails) {
        CkEmailW *email = bundle->GetEmail(i);

        // The sender's email address and name are available
        // in the From, FromAddress, and FromName properties.
        // If the sender is "Chilkat Support <support@chilkatsoft.com",
        // then the From property will hold the entire string.
        // the FromName property contains"Chilkat Support",
        // and the FromAddress property contains "support@chilkatsoft.com"
        wprintf(L"%s\n",email->ck_from());
        wprintf(L"%s\n",email->fromAddress());
        wprintf(L"%s\n",email->fromName());

        // Assume at this point your code checks to see if the sender
        // is one in your contacts database.  If so, this is
        // the code you would write to download the entire
        // email and save it to a file.

        // The ckx-imap-uid header field is added when
        // headers are downloaded.  This makes it possible
        // to get the UID from the email object.
        const wchar_t *uidStr = email->getHeaderField(L"ckx-imap-uid");
        int uid = wcstol(uidStr);

        CkEmailW *fullEmail = 0;
        fullEmail = imap.FetchSingle(uid,true);
        if (imap.get_LastMethodSuccess() == true) {
            // You may use the GenerateFilename method to
            // generate a unique filename...
            const wchar_t *filename = 0;
            filename = fullEmail->generateFilename();

            // SaveEml saves the entire email, including attachments.
            success = fullEmail->SaveEml(filename);
            delete fullEmail;
        }

        wprintf(L"--\n");
        delete email;

        i = i + 1;
    }

    // Disconnect from the IMAP server.
    success = imap.Disconnect();

    delete messageSet;
    delete bundle;
    }