How do I send an HTML email?

The following code snippets show you how to send an html e-mail. We begin by defining the e-mail information such as the from address, to address and the subject. The next step it to create a Properties that will be used to create a mail Session object. Having a Session object we can then create a Message using the MimeMessage.

We use the MimeMessage.setContent(Object, String) to set the html content of the email. Do not forget to set the content type to text/html and also supply the character set, in the example we use charset=utf-8.

package org.kodejava.example.mail;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.Properties;

public class SendHTMLEmail {
    public static void main(String[] args) {
        String from = "kodejava@gmail.com";
        String to = "kodejava@gmail.com";
        String subject = "Hello";

        Properties props = new Properties();
        props.put("mail.smtp.host", "smtp.gmail.com");
        props.put("mail.transport.protocol", "smtp");
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.port", "587");
        Session session = Session.getDefaultInstance(props);

        try {
            InternetAddress fromAddress = new InternetAddress(from);
            InternetAddress toAddress = new InternetAddress(to);

            Message message = new MimeMessage(session);
            message.setFrom(fromAddress);
            message.setRecipient(Message.RecipientType.TO, toAddress);
            message.setSubject(subject);

            String sb = "<head>" +
                "<style type=\"text/css\">" +
                "  .red { color: #f00; }" +
                "</style>" +
                "</head>" +
                "<h1 class=\"red\">" + message.getSubject() + "</h1>" +
                "<p>" +
                "Lorem ipsum dolor sit amet, <em>consectetur</em> adipisicing elit, " +
                "sed do eiusmod tempor incididunt ut labore et dolore magna <strong>" +
                "aliqua</strong>.</p>";
            message.setContent(sb, "text/html; charset=utf-8");
            message.saveChanges();

            // Send the message to the recipient. You also need to specify the username 
            // and password to authenticate to the mail server.
            Transport.send(message, "kodejava", "********");
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }
}

Maven Dependencies

<!-- http://repo1.maven.org/maven2/javax/mail/javax.mail-api/1.5.6/javax.mail-api-1.5.6.jar -->
<dependency>
    <groupId>javax.mail</groupId>
    <artifactId>javax.mail-api</artifactId>
    <version>1.5.6</version>
</dependency>
<!-- http://repo1.maven.org/maven2/javax/mail/mail/1.4.7/mail-1.4.7.jar -->
<dependency>
    <groupId>javax.mail</groupId>
    <artifactId>mail</artifactId>
    <version>1.4.7</version>
</dependency>

Wayan Saryada

Programmer, runner, recreational diver, live in the island of Bali, Indonesia. Mostly programming in Java, creating web based application with Spring Framework, Hibernate / JPA.

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