End a POP3 Session Without Committing Deletions

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Demonstrates the Chilkat MailMan.Pop3EndSessionNoQuit method, which closes the POP3 connection without sending the QUIT command. Pending deletion marks are not committed — messages marked with DELE during the session remain in the mailbox. This example marks a message for deletion and then abandons the session so the deletion does not take effect.

Background: POP3's deferred-deletion model effectively gives you a transaction: marks made with DELE are only applied when the session ends with QUIT. Ending without QUIT is therefore a rollback — useful if an error occurs mid-processing and you'd rather leave the mailbox untouched than risk deleting messages you failed to handle. Use Pop3EndSession when you do want the deletions committed.

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#include <C_CkMailMan.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkMailMan mailman;

    success = FALSE;

    //  Demonstrates the MailMan.Pop3EndSessionNoQuit method, which closes the POP3 connection
    //  WITHOUT sending the QUIT command.  Pending deletion marks are not committed -- messages
    //  marked with DELE during the session remain in the mailbox.

    mailman = CkMailMan_Create();

    //  Configure the POP3 server connection.
    CkMailMan_putMailHost(mailman,"pop.example.com");
    CkMailMan_putMailPort(mailman,995);
    CkMailMan_putPopSsl(mailman,TRUE);
    CkMailMan_putPopUsername(mailman,"user@example.com");
    CkMailMan_putPopPassword(mailman,"myPassword");

    success = CkMailMan_Pop3BeginSession(mailman);
    if (success == FALSE) {
        printf("%s\n",CkMailMan_lastErrorText(mailman));
        CkMailMan_Dispose(mailman);
        return;
    }

    //  Mark a message for deletion...
    success = CkMailMan_DeleteByMsgnum(mailman,1);
    if (success == FALSE) {
        printf("%s\n",CkMailMan_lastErrorText(mailman));
        CkMailMan_Dispose(mailman);
        return;
    }

    //  ...but end the session without QUIT, so the deletion is NOT committed and the message
    //  remains in the mailbox.
    success = CkMailMan_Pop3EndSessionNoQuit(mailman);
    if (success == FALSE) {
        printf("%s\n",CkMailMan_lastErrorText(mailman));
        CkMailMan_Dispose(mailman);
        return;
    }

    printf("Session closed without committing the pending deletion.\n");


    CkMailMan_Dispose(mailman);

    }