send mail using gmail account in java

Question

I have tried to send a simple e-mail to any gmail account using Gmail SMTP. getting the below error.

javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 587; nested exception is: java.net.ConnectException: Connection timed out: connect

My code is

package common;

import java.util.Date;
import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

import com.sun.mail.smtp.SMTPMessage;

public class SimpleMail{

    /**
           Outgoing Mail (SMTP) Server
           requires TLS or SSL: smtp.gmail.com (use authentication)
           Use Authentication: Yes
           Port for SSL: 465
         */
        public static void main(String[] args) {

             String to="[email protected]";
             String subject="New Mail";

             String msg="test test";

            final String user="gmailuser";
            final String pass="gmailpassowd";
            Properties props = new Properties();
            props.put("mail.smtp.host", "smtp.gmail.com");
            props.put("mail.smtp.port", "587"); //this is optional
            props.put("mail.smtp.auth", "true");
            props.put("mail.smtp.starttls.enable", "true");



            Session session = Session.getInstance(props,new javax.mail.Authenticator() {

                    @Override
            protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication(user,pass);
           }
           });

            try {
           MimeMessage message = new MimeMessage(session);
           message.setFrom(new InternetAddress(user));
           message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
           message.setSubject(subject);
           message.setText(msg);

             Transport.send(message);
                System.out.println("Mail sent..");
       }catch(Exception e)
       {
           System.out.println(e);
       }
    }



}

Is your internet connection working properly? Are you using some proxy? — Aakash
– Aakash, Commented Apr 23, 2015 at 10:06
I think you should try the Gmail via SSL example from mkyong.com/java/…. Also, your recipient's email address (if its gmail) should have this setting otherwise the mail does not get sent - Gmail security setting->Account permission->Access for less secure apps — LittlePanda
– LittlePanda, Commented Apr 23, 2015 at 10:19
java.net.ConnectException: Connection timed out: connect means you have some internet and or firewall issues — Dev
– Dev, Commented Apr 23, 2015 at 10:22

Steve Chaloner · Accepted Answer · 2015-04-23 10:35:39Z

1

Check your ports. From Google's support:

If you tried configuring your SMTP server on port 465 (with SSL) and port 587 (with TLS), but are still having trouble sending mail, try configuring your SMTP to use port 25 (with SSL).

Source: https://support.google.com/mail/answer/78775?hl=en

So, try using port 25 and see what happens.

answered Apr 23, 2015 at 10:35

Steve Chaloner

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5 Comments

Bharath kumar Over a year ago

I have tried with SSL with port 25 and also access less secure apps is allowed. getting below error,

Bharath kumar Over a year ago

Exception in thread "main" java.lang.RuntimeException: javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 25;

Steve Chaloner Over a year ago

Can you ping smtp.gmail.com ?

Bharath kumar Over a year ago

Pinging gmail-smtp-msa.l.google.com [74.125.200.108] with 32 bytes of data: Request timed out. Request timed out. Request timed out. Request timed out. Ping statistics for 74.125.200.108: Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

Steve Chaloner Over a year ago

There's your problem. Check with your network admin.

Davide Gualano · Accepted Answer · 2015-04-23 10:40:14Z

1

I have sent emails through the Gmail smtp in java using the Apache Commons Email library.
The documentation has a nice and simple example:

Email email = new SimpleEmail();
email.setHostName("smtp.googlemail.com");
email.setSmtpPort(465);
email.setAuthenticator(new DefaultAuthenticator("username", "password"));
email.setSSLOnConnect(true);
email.setFrom("[email protected]");
email.setSubject("TestMail");
email.setMsg("This is a test mail ... :-)");
email.addTo("[email protected]");
email.send();

answered Apr 23, 2015 at 10:40

Davide Gualano

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