JavaMail API — Send email from local SMTP using Java

The JavaMail API supports the JavaMail (javax.mail) interface for sending email. javax.mail has all the classes needed to send emails and other mail protocols like SMTP, POP3 and IMAP. In this article, we use JavaMail API to send emails through local smtp server using Java. Make sure the smtp server is running on localhost.

Step 1: Set up the JavaMail environment

First, we need to download the file that contains all the classes in javax.mail jar file. Download the jar (mail.jar) file from the oracle official website.

Now set the classpath in the system environment. Windows users ensure that the PATH variable is configured for the Java installation.

Windows:

c:> set classpath=mail.jar;.;

Linux:

# export JAVA_HOME=/opt/jdk1.8.0_05/
# export PATH=$PATH:$JAVA_HOME/bin
# export CLASSPATH=$JAVA_HOME/jre/lib/ext:$JAVA_HOME/lib/tools.jar:mail.jar:.

Step 2: Write a Java program to send email

Use the following Content creates a Java file sEndoJavaApI.java. In this script, the email needs to be changed from variable to variable as per the requirement.

import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
 
public class SendMailJavaAPI {
 
        public static void main(String[] args) throws Exception{
 
        String to="recipient@example.com";
        String from="sender@example.com";
 
        Properties props = new Properties();
        Session session = Session.getDefaultInstance(props, null);
 
        String msgBody = "Sending email using JavaMail API...";
 
        try {
            Message msg = new MimeMessage(session);
            msg.setFrom(new InternetAddress(from, "NoReply"));
            msg.addRecipient(Message.RecipientType.TO,
                             new InternetAddress(to, "Mr. Recipient"));
            msg.setSubject("Welcome To Java Mail API");
            msg.setText(msgBody);
            Transport.send(msg);
            System.out.println("Email sent successfully...");
 
        } catch (AddressException e) {
            throw new RuntimeException(e);
        } catch (MessagingException e) {
            throw new RuntimeException(e);
        }
    }
}

Step 3: Execute the program to send the email

Finally, we need to execute the Java program to send the email. As we know, this happens in two STPEs, the first one compiles the program and the second one runs the program.

# javac SendMailJavaAPI.java
# java SendMailJavaAPI

This article has ended here. For more exciting content, you can pay attention to other related column tutorials on the php Chinese website! ! !

The above is the detailed content of JavaMail API — Send email from local SMTP using Java. For more information, please follow other related articles on the PHP Chinese website!