(Java) Retrieve UIDL's from POP3 Server

Retrieve a list of UIDLs from a POP3 server. UIDLs are unique identifiers, 1 to 70 characters long, composed of characters ranging from 0x21 to 0x7E. These identifiers uniquely distinguish messages within a mailbox and remain consistent across sessions.

Note: This example requires Chilkat v11.0.0 or greater.

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

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

    CkMailMan mailman = new CkMailMan();

    mailman.put_MailHost("pop.example.com");

    mailman.put_PopUsername("myLogin");
    mailman.put_PopPassword("myPassword");

    mailman.put_MailPort(995);
    mailman.put_PopSsl(true);

    CkStringTable stUidls = new CkStringTable();
    success = mailman.FetchUidls(stUidls);
    if (success == false) {
        System.out.println(mailman.lastErrorText());
        return;
        }

    // Download each email by UIDL.
    CkEmail email = new CkEmail();

    int count = stUidls.get_Count();
    int i = 0;
    while (i < count) {
        // Download the full email.
        String uidl = stUidls.stringAt(i);
        success = mailman.FetchByUidl(uidl,false,0,email);
        if (success == false) {
            System.out.println(mailman.lastErrorText());
            return;
            }

        System.out.println(i);
        System.out.println("UIDL: " + uidl);
        System.out.println("From: " + email.ck_from());
        System.out.println("Subject: " + email.subject());

        i = i+1;
        }

    mailman.Pop3EndSession();
  }
}