(Unicode 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.

Chilkat C/C++ Library Downloads
MS Visual C/C++ C++ Builder Linux C/C++ Alpine Linux C/C++	MacOS C/C++ iOS C/C++ Android C/C++ MinGW C/C++

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

    CkImapW imap;

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

    // Login
    success = imap.Login(L"****",L"****");
    if (success == false) {
        wprintf(L"%s\n",imap.lastErrorText());
        return;
    }

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

    // Get the message IDs of all the emails in the mailbox
    // We can choose to fetch UIDs or sequence numbers.
    bool fetchUids = true;
    CkMessageSetW messageSet;
    success = imap.QueryMbx(L"ALL",fetchUids,messageSet);
    if (success == false) {
        wprintf(L"%s\n",imap.lastErrorText());
        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.
    CkEmailBundleW bundle;
    bool headersOnly = true;
    success = imap.FetchMsgSet(headersOnly,messageSet,bundle);
    if (success == false) {
        wprintf(L"%s\n",imap.lastErrorText());
        return;
    }

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

        // Display the From and Subject
        wprintf(L"%s\n",email.ck_from());
        wprintf(L"%s\n",email.subject());

        // Display the recipients:
        j = 0;
        while (j < email.get_NumTo()) {
            wprintf(L"TO: %s, %s\n",email.getToName(j),email.getToAddr(j));
            j = j + 1;
        }

        j = 0;
        while (j < email.get_NumCC()) {
            wprintf(L"CC: %s, %s\n",email.getCcName(j),email.getCcAddr(j));
            j = j + 1;
        }

        // Show the total size of the email, including body and attachments:
        wprintf(L"%d\n",email.get_Size());

        // 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) {
            wprintf(L"%s\n",imap.getMailAttachFilename(email,j));
            int attachSize = imap.GetMailAttachSize(email,j);
            wprintf(L"    size = %d bytes\n",attachSize);
            j = j + 1;
        }

        wprintf(L"--\n");

        i = i + 1;
    }

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