SimplePOP3.java

import java.util.Properties;
import javax.mail.*;

public class SimplePOP3 {
    public static void main(String[] args) throws Exception {
        Properties p = new Properties();
        p.put("mail.store.protocol", "pop3");
        p.put("mail.pop3.host", "pop.gmail.com");
        p.put("mail.pop3.port", "995");
        p.put("mail.pop3.ssl.enable", "true");
        
        Session s = Session.getInstance(p);
        Store store = s.getStore("pop3");
        store.connect("pop.gmail.com", "your@gmail.com", "your-password");
        
        Folder inbox = store.getFolder("INBOX");
        inbox.open(Folder.READ_ONLY);
        
        Message[] msgs = inbox.getMessages();
        System.out.println("📬 Emails: " + msgs.length);
        
        for (int i = 0; i < Math.min(3, msgs.length); i++) {
            System.out.println("\n" + (i+1) + ". " + msgs[i].getSubject());
            System.out.println("   From: " + msgs[i].getFrom()[0]);
        }
        
        inbox.close(false);
        store.close();
    }
}