(.NET Core C#) IMAP Delete Old Email (before a specified date)

Demonstrates how to delete email older than a particular date.

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// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Imap imap = new Chilkat.Imap();

// Connect to an IMAP server.
// Use TLS
imap.Ssl = true;
imap.Port = 993;
// Use your IMAP server domain.  This example 
bool success = imap.Connect("my-imap-server-domain.com");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

// Login
success = imap.Login("myLogin","myPassword");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

// Select an IMAP mailbox
success = imap.SelectMailbox("Inbox");
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

// Get message ID's for emails older than 1/1/2018
Chilkat.MessageSet messageSet = null;
bool fetchUids = true;
messageSet = imap.Search("SENTBEFORE 01-Jan-2018",fetchUids);
if (imap.LastMethodSuccess == false) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

// If desired, we can examine the Subject of each email to be deleted..
int i = 0;
int count = messageSet.Count;
while (i < count) {
    Chilkat.Email email = imap.FetchSingleHeader(messageSet.GetId(i),true);
    if (imap.LastMethodSuccess == true) {
        Debug.WriteLine(email.Subject);

    }

    i = i + 1;
}

// Set the Deleted flag for each message:
success = imap.SetFlags(messageSet,"Deleted",1);
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);

    return;
}

// Expunge and close the mailbox.
success = imap.ExpungeAndClose();
if (success != true) {
    Debug.WriteLine(imap.LastErrorText);

    return;
}

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