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Sending Email via JAVA [duplicate]

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How can I send an email by Java application using GMail, Yahoo, or Hotmail?
(14 answers)
Closed 2 years ago.
I am trying to make automatic message which will be sent on email but, when i start my program i get :
com.sun.mail.util.MailConnectException: Couldn't connect to host, port: localhost, 25; timeout -1;
I want it to be sent from localhost not exact email with password and username.
code:
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
import javax.mail.Session;
import javax.mail.Transport;
public class Email
{
public static void main(String[] args) throws IOException {
String recipient = "test#gmail.com";
String sender = "sender#gmail.com";
String host = "localhost";
Properties properties = System.getProperties();
properties.setProperty("mail.smtp.host", host);
Session session = Session.getDefaultInstance(properties);
try {
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(sender));
message.addRecipient(Message.RecipientType.TO, new InternetAddress(recipient));
message.setSubject("Test sub");
message.setText("Test MSG");
Transport.send(message);
System.out.println("Sent.");
} catch (AddressException e) {
e.printStackTrace();
} catch (MessagingException e) {
e.printStackTrace();
}
}
}
To run this class i am using javax.mail.jar.
Does somebody know where the problem is ?

It's trying to connect to the mail server at localhost but you don't have one running. To send smtp emails you'll have to connect to a mail server. The default port is 25. That's why the message says:
Couldn't connect to host, port: localhost, 25
So update your host property to point to where a server is running. You can use SMTP settings from say a gmail account to do this easily.
This might help.
https://www.siteground.com/kb/google_free_smtp_server/

Exception in thread "main" java.lang.RuntimeException: javax.mail.AuthenticationFailedException: 535 5.7.8 Authentication credentials invalid

This piece of code is picked up from http://www.tutorialspoint.com/javamail_api/javamail_api_sending_simple_email.htm
//package com.tutorialspoint;
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class SendEmail {
public static void main(String[] args) {
// Recipient's email ID needs to be mentioned.
String to = "ABC#gmail.com";
// Sender's email ID needs to be mentioned
String from = "PQR#gmail.com";
final String username = "NAME";
final String password = "****";
// Assuming you are sending email through relay.jangosmtp.net
String host = "relay.jangosmtp.net";
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", host);
props.put("mail.smtp.port", "25");
// Get the Session object.
Session session = Session.getInstance(props,new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}
});
try {
// Create a default MimeMessage object.
Message message = new MimeMessage(session);
// Set From: header field of the header.
message.setFrom(new InternetAddress(from));
// Set To: header field of the header.
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse(to));
// Set Subject: header field
message.setSubject("Testing Subject");
// Now set the actual message
message.setText("Hello, this is sample for to check send "
+ "email using JavaMailAPI ");
// Send message
Transport.send(message);
System.out.println("Sent message successfully....");
} catch (MessagingException e) {
throw new RuntimeException(e);
}
}
}
I tried getting hint from this link. But it seems to be using a slightly different method.
On running it with a debugger, exception seems to be coming from following code:
Transport.send(message);
Following is the stack trace:
at com.sun.mail.smtp.SMTPTransport$Authenticator.authenticate(SMTPTransport.java:809)
at com.sun.mail.smtp.SMTPTransport.authenticate(SMTPTransport.java:752)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:669)
at javax.mail.Service.connect(Service.java:317)
at javax.mail.Service.connect(Service.java:176)
at javax.mail.Service.connect(Service.java:125)
at javax.mail.Transport.send0(Transport.java:194)
at javax.mail.Transport.send(Transport.java:124)
at SendEmail.main(SendEmail.java:58)
PS: I have checked the username and password. Also, 2 step sign in process is not enabled for the account from which I am trying to send mail.
Can someone please explain what could be the cause of authenticatio failure? Alternatively, if there is some other post which has already answered the query, please point me to it. Thanks.

The server isn't happy with the username or password you're using. You can probably guess the common reasons that might be the case, staring with you provided the wrong username or password.
The JavaMail Session debugging output might provide more information.

change String host = "relay.jangosmtp.net";
to String host = "smtp.gmail.com";
and Port from 25 to 587

Issue in sending email to a group email using java mail

As subject is self explanatory - I am facing issue in sending email to a group email using java mail.
I have gone through through several blogs & articles which are of no help & does not have a precise answer or hangs in middle.
Can you please help. Here is my mail class for you. My mail is going to have a link to ftp location & a text file as an attachment.
To separate the issue i tried to send a simple mail to the group as well but that didn't help either.
I tried to find answers in places like java-forums.org & Stack overflow but found no luck.
I appreciate your quality time & help in providing an insight to the issue.
To explain the issue better-
My Automation framework when completes the execution of test cases, it sends a mail to me with the link to execution report & a log file as an attachment. Now the audience for the report has expanded & we need to send the mail to a group email address.
When I set the email (to say group.email#company.com) none of the users in the group receives the mail. Where as if I send the email to my email address or anyone else email address it works.
I get no logs or error for this & so I am not able to understand the issue correctly.
An insight from the experts will help in understanding the issue.
Thanks in advance.
Akshat
import java.util.ArrayList;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.Message.RecipientType;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
public class ReportMail {
private MimeMessage message = null;
private Session emailSession = null;
private MimeBodyPart textPart = null;
private ArrayList<MimeBodyPart> attachmentArray = null;
public void sendMailer(String mailToId, String string, String mailServer1,
int mailPort, String mailAdmin) {
Properties mailProperties = null;
mailProperties = new Properties();
String adminEmailId = mailAdmin;
String mailServer = mailServer1;
mailProperties.put("mail.transport.protocol", "smtp");
//mailProperties.put("mail.smtp.auth", "true");
mailProperties.put("mail.smtp.host", mailServer);
mailProperties.put("mail.from", adminEmailId);
mailProperties.put("mail.smtp.port", mailPort);
mailProperties.put("mail.to", mailToId);
try {
emailSession = Session.getInstance(mailProperties);
emailSession.setDebug(false);
message = new MimeMessage(emailSession);
textPart = new MimeBodyPart();
attachmentArray = new ArrayList<MimeBodyPart>(2);
message.addRecipients(RecipientType.TO, mailToId);
message.setSubject(string);
message.setFrom(new InternetAddress(adminEmailId));
setContent("PCM Automation Report");
//setContent("test123");
sendEMail();
} catch (Exception e) {
e.printStackTrace();
}
}
public void setContent(String content) {
try {
textPart.setContent(content, "text/html");
} catch (Exception e) {
e.printStackTrace();
}
}
public boolean sendEMail() throws Exception {
try {
Multipart mp = new MimeMultipart();
mp.addBodyPart(textPart);
for (int i = 0; i < attachmentArray.size(); i++)
mp.addBodyPart(attachmentArray.get(i));
/********************
*
*/
// Part two is attachment
BodyPart messageBodyPart = new MimeBodyPart();
messageBodyPart = new MimeBodyPart();
messageBodyPart.setText("Below is the link for the Test Automation report as link & attached Log file. PFA.");
//mp.addBodyPart(messageBodyPart);
String filename = "logfile.log"; //C:\workspacePCMSanity\PCMSanity\logfile.log
DataSource source = new FileDataSource(filename);
messageBodyPart.setDataHandler(new DataHandler(source));
messageBodyPart.setFileName(filename);
mp.addBodyPart(messageBodyPart);
/**
*
*/
message.setContent(mp);
Transport transport = emailSession.getTransport();
transport.connect();
transport.sendMessage(message, message.getRecipients(Message.RecipientType.TO));
transport.close();
} catch (Exception e) {
e.printStackTrace();
throw e;
}
return true;
}
}

In Microsoft Exchange Server there is a special group address setting option Require that all senders are authenticated. When an unknown user is used as a sender, such an email is rejected. You can either send emails in the name of real user or enable this option. In the latter case the group address is opened to spam.
http://technet.microsoft.com/en-us/library/bb124405%28v=exchg.141%29.aspx

Java doesn't know whether an email address is for a single user or a group.
Probably the issue with SMTP Server.

jar and No Class definition found error

I have created a java program for sending mail and I import some package that is related to the program. I have downloded package javax.mail and javax.activation and put it in to the C:\Program Files\Java\jdk1.7.0\jre\lib\ext
I compile my program then it compiles but when I run it throws Exception.
I am not able to understand why it is throwing exception.
my code is here.
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
import java.net.*;
public class SendEmail
{
public static void main(String [] args)
{
// Recipient's email ID needs to be mentioned.
String to = "rs.89.rj#gmail.com";
// Sender's email ID needs to be mentioned
String from = "manoj1990gupta#yahoo.in";
try{
// Assuming you are sending email from localhost
String host = InetAddress.getLocalHost().toString();
// Get system properties
Properties properties = System.getProperties();
// Setup mail server
properties.setProperty("mail.smtp.host", host);
// Get the default Session object.
Session session = Session.getDefaultInstance(properties);
try{
// Create a default MimeMessage object.
MimeMessage message = new MimeMessage(session);
// Set From: header field of the header.
message.setFrom(new InternetAddress(from));
// Set To: header field of the header.
message.addRecipient(Message.RecipientType.TO,
new InternetAddress(to));
// Set Subject: header field
message.setSubject("This is the Subject Line!");
// Now set the actual message
message.setText("This is actual message");
// Send message
Transport.send(message);
System.out.println("Sent message successfully....");
}catch (MessagingException mex) {
mex.printStackTrace();
}}catch(Exception e){}
}
}

You need to download JavaMail API package and put it into the classpath, but make sure to include mail.jar and all dependant libraries that you can find into the lib folder.
To set the classpath from the command line :
java -cp "mail.jar;lib/*" SendEMail

How to send mail in Java using same mechanism like in PHP mail()

I'm having trouble in sending mail from my application. I can't use simple SMTP server on my application. And have no idea how to deal with sending mails in JAVA. I'm supposed to use same/similar mechanism like PHP's mail() uses. Unfortunately I have no idea how to do it.

The Java Mail API provides support for sending and receiving e-mails. The API provides a plug-in architecture where vendor’s implementation for their own proprietary protocols can be dynamically discovered and used at the run time. Sun provides a reference implementation and its supports the following protocols:
Internet Mail Access Protocol (IMAP)
Simple Mail Transfer Protocol (SMTP)
Post Office Protocol 3 (POP 3)
Here is an example of how to use it:
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.Message.RecipientType;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class SendMail {
private String from;
private String to;
private String subject;
private String text;
public SendMail(String from, String to, String subject, String text){
this.from = from;
this.to = to;
this.subject = subject;
this.text = text;
}
public static void main(String[] args) {
String from = "abc#gmail.com";
String to = "xyz#gmail.com";
String subject = "Test";
String message = "A test message";
SendMail sendMail = new SendMail(from, to, subject, message);
sendMail.send();
}
public void send(){
Properties props = new Properties();
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.port", "465");
Session mailSession = Session.getDefaultInstance(props);
Message simpleMessage = new MimeMessage(mailSession);
InternetAddress fromAddress = null;
InternetAddress toAddress = null;
try {
fromAddress = new InternetAddress(from);
toAddress = new InternetAddress(to);
} catch (AddressException e) {
e.printStackTrace();
}
try {
simpleMessage.setFrom(fromAddress);
simpleMessage.setRecipient(RecipientType.TO, toAddress);
simpleMessage.setSubject(subject);
simpleMessage.setText(text);
Transport.send(simpleMessage);
} catch (MessagingException e) {
e.printStackTrace();
}
}
}

You need to check out the JavaMail API, and as PHP's mail() requires, it will need an SMTP server to send that email.
If you require an SMTP server I suggest searching Google for an SMTP server for your operating system or maybe you could use an SMTP server provided by your ISP or server host.

You can use JavaMail api with a local SMTP server like Apache James, so after installing and running James server, you can set the SMTP server ip to 127.0.0.1

I'm supposed to use same/similar mechanism like PHP's mail() uses.
You can't, because it doesn't exist. If that's the requirement, get it changed.
Unfortunately I have no idea how to do it.
See the JavaMail API.