Node.js

End a POP3 Session Without Committing Deletions

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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Node.js

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function chilkatExample() {

    var 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.

    var mailman = new chilkat.MailMan();

    //  Configure the POP3 server connection.
    mailman.MailHost = "pop.example.com";
    mailman.MailPort = 995;
    mailman.PopSsl = true;
    mailman.PopUsername = "user@example.com";
    mailman.PopPassword = "myPassword";

    success = mailman.Pop3BeginSession();
    if (success == false) {
        console.log(mailman.LastErrorText);
        return;
    }

    //  Mark a message for deletion...
    success = mailman.DeleteByMsgnum(1);
    if (success == false) {
        console.log(mailman.LastErrorText);
        return;
    }

    //  ...but end the session without QUIT, so the deletion is NOT committed and the message
    //  remains in the mailbox.
    success = mailman.Pop3EndSessionNoQuit();
    if (success == false) {
        console.log(mailman.LastErrorText);
        return;
    }

    console.log("Session closed without committing the pending deletion.");

}

chilkatExample();