Read Gmail POP3 Mailbox

Reads the header for each email in a GMail POP3 mailbox and displays the FROM and SUBJECT header fields. In your GMail "Forwarding and POP" settings, be sure to select "When messages are accessed with POP keep Gmail's copy in the Inbox".

Download Chilkat Java Library

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[])
  {
    // The mailman object is used for receiving (POP3)
    // and sending (SMTP) email.
    CkMailMan mailman = new CkMailMan();

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

    // Set the GMail account POP3 properties.
    mailman.put_MailHost("pop.gmail.com");
    mailman.put_PopUsername("****");
    mailman.put_PopPassword("****");
    mailman.put_PopSsl(true);
    mailman.put_MailPort(995);

    CkEmailBundle bundle;
    // Read mail headers and one line of the body.
    // To get the full emails, call CopyMail instead (no arguments)
    bundle = mailman.GetAllHeaders(1);

    if (bundle == null ) {
        System.out.println(mailman.lastErrorText());
        return;
    }

    int i;
    CkEmail email;
    for (i = 0; i <= bundle.get_MessageCount() - 1; i++) {
        email = bundle.GetEmail(i);

        // Display the From email address and the subject.
        System.out.println(email.ck_from());
        System.out.println(email.subject() + "\n");

    }


  }
}