Process Large POP3 Mailbox

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Demonstrates how to read email from a mailbox that may contain a large number of emails (on the order of thousands of emails or more).

//  The mailman object is used for receiving (POP3)
//  and sending (SMTP) email.
Chilkat.MailMan mailman = new Chilkat.MailMan();

//  Any string argument automatically begins the 30-day trial.
bool success;
success = mailman.UnlockComponent("30-day trial");
if (success != true) {
    MessageBox.Show("Component unlock failed");
    return;
}

//  Set the POP3 server's hostname
mailman.MailHost = "mail.chilkatsoft.com";

//  Set the POP3 login/password.
mailman.PopUsername = "myLogin";
mailman.PopPassword = "myPassword";

//  First, get the list of UIDLs for all emails in the mailbox.
Chilkat.StringArray sa = null;
sa = mailman.GetUidls();
int i;
int numEmails;
numEmails = sa.Count;

//  Download the emails in chunks of 10 emails each.
int chunkBeginIdx;
chunkBeginIdx = 0;
int chunkEndIdx;
chunkEndIdx = 9;
if (chunkEndIdx >= numEmails) {
    chunkEndIdx = numEmails - 1;
}

Chilkat.StringArray saChunk = new Chilkat.StringArray();
while ((chunkEndIdx < (numEmails - 1))) {

    //  Build a chunk of 10 UIDLs.
    saChunk.Clear();
    for (i = chunkBeginIdx; i <= chunkEndIdx; i++) {
        saChunk.Append(sa.GetString(i));
    }

    //  Display the UIDLs in this chunk...
    string chunkStr;
    chunkStr = saChunk.SaveToText();
    textBox1.Text += chunkStr + "\r\n";
    textBox1.Text += "----" + "\r\n" + "\r\n";

    //  Download this chunk of email from the POP3 server.
    Chilkat.EmailBundle bundle = null;
    bundle = mailman.FetchMultiple(saChunk);
    if (bundle == null ) {
        MessageBox.Show(mailman.LastErrorText);
        return;
    }

    //  Process the bundle...
    //  (your application's processing code goes here...)

    //  Get the next chunk...
    chunkBeginIdx += 10;
    if (chunkBeginIdx >= numEmails) {
        break;
    }

    chunkEndIdx += 10;
    if (chunkEndIdx >= numEmails) {
        chunkEndIdx = numEmails - 1;
    }

}