POP3 mail server

Question

Hi,
Is there any sample java code which will do the activity of sending/receiving mails from/to POP3 server?
Is it a java method to redirect the mails to any specific directory in unix directory?
regards
venki

Answer 1

Hello Sir,
Sorry, i think i should be knowing the pop3 server host name. its my mistake. i think yahoo mail plus only providing pop3 hostname. its not possible to connect with pop3 yahoo server with normail mail user.
Ok Cool.
I have one more quetion. Is it Java having some APIs (java should be running as background process always) which processing with INBOX folder and check for new mails ,as soon as the new mail arrives, it should be redirected to other personal folder in the mail nox.
Following code is the one which process with mailbox and get all the messages and store into one dir called msg ,and get all the attachement and store them into attach folder.
code]
import com.jscape.inet.pop.*;
import com.jscape.inet.mime.*;
import com.jscape.inet.email.*;
import java.util.Enumeration;
import java.io.*;
public class Example {
private static File messagesDir = new File("msg");
private static File attachmentsDir = new File("attach");
static BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
// get messages from Pop mailbox
public void getMessages(String hostname, String username, String password)
throws PopException, MimeException, IOException {
// ensure that messages directory is valid
if(!messagesDir.exists()) {
messagesDir.mkdir();
// ensure that attachments directory is valid
if(!attachmentsDir.exists()) {
attachmentsDir.mkdir();
// connect and login
Pop pop = new Pop(hostname,username,password);
pop.connect();
System.out.println("Retrieving messsages....");
// get messages
Enumeration messages = pop.getMessages();
if(!messages.hasMoreElements()) {
System.out.println("No messages found");
// write messages to disk
int msgnum = 0;
while(messages.hasMoreElements()) {
++msgnum;
EmailMessage msg = (EmailMessage)messages.nextElement();
               String s= msg.getSubject();
               File f = new File(messagesDir,"msg" + msgnum + ".txt");
               BufferedWriter out = new BufferedWriter(new FileWriter(f) );
               String fromString = "From: "+msg.getFrom();
               out.write(fromString);
               out.newLine();
               String toString = "To: "+msg.getTo();
               out.write(toString);
               out.newLine();
               String dateString = "Sent: "+msg.getDate();
               out.write(dateString);
               out.newLine();
               String msgString =msg.getBody();
               out.write(msgString);
               out.newLine();
               //Not written to the file until enough data accumulates.
               //The data is stored in a buffer until then.
               out.close();
               //Causes any unwritten data to be flushed from
               //the buffer and written to the file.
System.out.println("Retrieved message: " + f.getAbsoluteFile());
// write attachments to disk
int attachnum = 0;
Enumeration attachments = msg.getAttachments();
while(attachments.hasMoreElements()) {
++attachnum;
Attachment attach = (Attachment)attachments.nextElement();
String attachmentFileName = attach.getFilename();
if(attachmentFileName == null) {
attachmentFileName = "attachment" + msgnum + "-" + attachnum;
String fileName = attach.getFilename();
if(fileName == null) {
fileName = System.currentTimeMillis() + ".txt";
File attFile = new File(attachmentsDir,fileName);
FileOutputStream attOut = new FileOutputStream(attFile);
try {
attOut.write(attach.getFileData());
attOut.close();
System.out.println("Retrieved attachment: " + attFile.getAbsoluteFile());
catch(Exception e) {
throw new PopException("unable to decode file attachment");
pop.disconnect();
public static void main(String[] args) {
String hostname;
String username;
String password;
try {
System.out.print("Enter Pop3 hostname (e.g. pop.yahoo.com): ");
hostname = reader.readLine();
System.out.print("Enter Pop3 Username: ");
username = reader.readLine();
System.out.print("Enter Pop3 Password: ");
password = reader.readLine();
Example example = new Example();
example.getMessages(hostname,username,password);
catch(Exception e) {
e.printStackTrace();
The above has not checking the new mail messages arriaval, it just retrieve all the messages every time. what i really need is run the java program in background live and check for new mails ,if it comes it should be save the msg/attach in the dirs and move the mails into one folder under the inbox.
Waiting for your valuable reply!
regards
venki[