(C++) Download Unread Email from IMAP Mailbox

Download unread email messages from an IMAP mailbox.

Note: This example requires Chilkat v11.0.0 or greater.

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#include <CkImap.h>
#include <CkMessageSet.h>
#include <CkEmailBundle.h>
#include <CkEmail.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkImap imap;

    // Connect to an IMAP server.
    // Use TLS
    imap.put_Ssl(true);
    imap.put_Port(993);
    success = imap.Connect("imap.example.com");
    if (success == false) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Login
    success = imap.Login("admin@chilkatsoft.com","myPassword");
    if (success == false) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox");
    if (success == false) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Find emails marked as seen or not already seen:
    const char *seenSearch = "SEEN";
    const char *notSeenSearch = "NOT SEEN";

    // Get the set of unseen message UIDs
    bool fetchUids = true;
    CkMessageSet messageSet;
    success = imap.QueryMbx(notSeenSearch,fetchUids,messageSet);
    if (success == false) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Fetch the unseen emails into a bundle object:
    CkEmailBundle bundle;
    bool headersOnly = false;
    success = imap.FetchMsgSet(headersOnly,messageSet,bundle);
    if (success == false) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Display the Subject and From of each email.
    CkEmail email;
    int i = 0;
    int numEmails = bundle.get_MessageCount();
    while (i < numEmails) {
        bundle.EmailAt(i,email);

        std::cout << email.getHeaderField("Date") << "\r\n";
        std::cout << email.subject() << "\r\n";
        std::cout << email.ck_from() << "\r\n";
        std::cout << "--" << "\r\n";
        i = i + 1;
    }

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