JavaMail – read email

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Today we have a quick update for your, code that can be used to read email messages from IMAP or POP3 server. This code uses JavaMail API for reading emails from the server. It displays inbox contents including email sender, title and body. Take a look at our code.

JavaMail read emails- the code

package com.itcuties.java;

import java.util.Properties;

import javax.mail.Address;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Store;

/**
* Class reads emails
*
* @author itcuties
*
*/
public class JavaMailReader {

   public static void main(String[] args) {
       readEmails(true);
   }

   /**
    * Method reads emails from the IMAP or POP3 server.
    * @param isImap - if true then we are reading messages from the IMAP server, if no then read from the POP3 server.
    */
   private static void readEmails(boolean isImap) {
       // Create all the needed properties - empty!
       Properties connectionProperties = new Properties();
       // Create the session
       Session session = Session.getDefaultInstance(connectionProperties,null);
       
       try {
           System.out.print("Connecting to the IMAP server...");
           // Connecting to the server
           // Set the store depending on the parameter flag value
           String storeName = isImap ? "imaps" : "pop3";    
           Store store = session.getStore(storeName);
           
           // Set the server depending on the parameter flag value
           String server = isImap ? "imap.itcuties.com" : "pop3.itcuties.com";
           store.connect(server,"coding@itcuties.com","P@ssw0rd1");
           
           System.out.println("done!");
           
           // Get the Inbox folder
           Folder inbox = store.getFolder("Inbox");
           
           // Set the mode to the read-only mode
           inbox.open(Folder.READ_ONLY);
           
           // Get messages
           Message messages[] = inbox.getMessages();
           
           System.out.println("Reading messages...");
           
           // Display the messages
           for(Message message:messages) {
               for (Address a: message.getFrom())
                   System.out.println("From:" + a);
                   
               System.out.println("Title: " + message.getSubject());
               System.out.println();
               System.out.println(message.getContent());
               System.out.println("---");
           }
           
       } catch (Exception e) {
           e.printStackTrace();
       }
       
   }

}

When you run this code you will get the following output:

Connecting to the IMAP server...done!
Reading messages...
From:Team ITC <team@itcuties.com>
Title: Test message subject

Hello email :)

---
From:Team ITC <team@itcuties.com>
Title: Message title

Hi there!
Take IT easy

itcuties

---

If you are using maven like we do, this is the pom.xml file with all the needed artifacts the javamail, javax.activation and the javax.mail extensions.

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.itcuties.java</groupId>
  <artifactId>java-mail-reader</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  
  <dependencies>
    <!-- JavaMail API -->  
  	<dependency>
  		<groupId>javamail</groupId>
  		<artifactId>javamail</artifactId>
  		<version>1.3.3</version>
  	</dependency>
  	<!-- Java Activation -->
  	<dependency>
  		<groupId>javax.activation</groupId>
  		<artifactId>activation</artifactId>
  		<version>1.1.1</version>
  	</dependency>
  	<!-- JavaMail extension -->
  	<dependency>
  		<groupId>javax.mail</groupId>
  		<artifactId>mail</artifactId>
  		<version>1.4.6-rc1</version>
  	</dependency>
  </dependencies>
  
</project>

Download this sample code here.

This code is available on our GitHub repository as well.