(Unicode C++) Upload (Append) Email to an IMAP Mailbox and get the UID of the Appended Email

Upload / append an email to an IMAP mailbox and get the UID of the appended email.

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#include <CkImapW.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;
    }

    // Check the capabilities of the IMAP server.
    const wchar_t *cap = imap.capability();
    wprintf(L"IMAP capabilities: %s\n",cap);

    // If the capabilities string contains the substring "UIDPLUS", then 
    // the UID of the appended email will be available in the AppendUid property (see below).

    // For example, the GMail IMAP server has these capabilities (at this current time)
    // * CAPABILITY IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA ID XLIST CHILDREN 
    // X-GM-EXT-1 UIDPLUS COMPRESS=DEFLATE ENABLE MOVE CONDSTORE ESEARCH UTF8=ACCEPT 
    // APPENDLIMIT=35882577 LIST-EXTENDED LIST-STATUS

    CkEmailW email;

    // Load the email from a .eml file.
    success = email.LoadEml(L"myEmail.eml");
    if (success != true) {
        wprintf(L"%s\n",email.lastErrorText());
        return;
    }

    success = imap.AppendMail(L"Inbox",email);
    if (success != true) {
        wprintf(L"%s\n",imap.lastErrorText());
        return;
    }

    // If the IMAP server supports the UIDPLUS extension, then the 
    // imap.AppendUid will contain the UID of the appended email.
    // Otherwise AppendUid will be 0.
    wprintf(L"UID of appended email: %d\n",imap.get_AppendUid());

    // If the IMAP server does NOT have UIDPLUS, then a program can 
    // first select the mailbox, get the value of the UidNext property,
    // and then append.  The appended email SHOULD have a UID equal to 
    // the UidNext that was obtained just prior to appending (assuming no other
    // program is simultaneously appending an email to the same mailbox).

    // Note: It is not required to select a mailbox to append.  The select is only
    // done for the purpose of obtaining the UIDNEXT value.
    success = imap.SelectMailbox(L"Inbox");
    if (success != true) {
        wprintf(L"%s\n",imap.lastErrorText());
        return;
    }

    int uidNext = imap.get_UidNext();

    success = imap.AppendMail(L"Inbox",email);
    if (success != true) {
        wprintf(L"%s\n",imap.lastErrorText());
        return;
    }

    wprintf(L"The UID of the appended email SHOULD be %d\n",uidNext);

    wprintf(L"Email uploaded to Inbox!\n");

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