(C++) Imap.GetMailSize vs Email.Size

Shows how to get the total size of an email, as well as the sizes of the attachments. This can be done when either full-emails or headers-only are downloaded.

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.someMailServer.com");
    if (success == false) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Login
    success = imap.Login("****","****");
    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;
    }

    // Get the message IDs of all the emails in the mailbox
    // We can choose to fetch UIDs or sequence numbers.
    bool fetchUids = true;
    CkMessageSet messageSet;
    success = imap.QueryMbx("ALL",fetchUids,messageSet);
    if (success == false) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // When downloading headers, each email object contains
    // (obviously) the headers, but the body will be missing.
    // Attachments will not be included.  However, it is
    // possible to get information about the attachments
    // as well as the complete size of the email.
    CkEmailBundle bundle;
    bool headersOnly = true;
    success = imap.FetchMsgSet(headersOnly,messageSet,bundle);
    if (success == false) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    // Loop over the email objects and display information about each:
    CkEmail email;
    int i = 0;
    int j = 0;
    int numEmails = bundle.get_MessageCount();
    while (i < numEmails) {
        bundle.EmailAt(i,email);

        // Display the From and Subject
        std::cout << email.ck_from() << "\r\n";
        std::cout << email.subject() << "\r\n";

        // Display the recipients:
        j = 0;
        while (j < email.get_NumTo()) {
            std::cout << "TO: " << email.getToName(j) << ", " << email.getToAddr(j) << "\r\n";
            j = j + 1;
        }

        j = 0;
        while (j < email.get_NumCC()) {
            std::cout << "CC: " << email.getCcName(j) << ", " << email.getCcAddr(j) << "\r\n";
            j = j + 1;
        }

        // Show the total size of the email, including body and attachments:
        std::cout << email.get_Size() << "\r\n";

        // When a full email is downloaded, we would use the
        // email.NumAttachments property in conjunction with the
        // email.GetMailAttach* methods.
        // However, when an email object contains only the header,
        // we need to access the attachment info differently:
        int numAttach = imap.GetMailNumAttach(email);
        j = 0;
        while (j < numAttach) {
            std::cout << imap.getMailAttachFilename(email,j) << "\r\n";
            int attachSize = imap.GetMailAttachSize(email,j);
            std::cout << "    size = " << attachSize << " bytes" << "\r\n";
            j = j + 1;
        }

        std::cout << "--" << "\r\n";

        i = i + 1;
    }

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