[JAVA] SERVER MAIL

Java applications can send emails using the JavaMail API, which provides a platform-independent framework for building mail and messaging applications. This API requires a connection to an SMTP server to send emails.

Key Concepts:

JavaMail API:

This is the core library for sending emails in Java. It provides classes for creating, sending, and receiving emails.

SMTP Server:

The Simple Mail Transfer Protocol (SMTP) server is responsible for sending emails. You need the server address, port, and authentication credentials to use it. Common SMTP servers include Gmail, Outlook, and others.

Session:

A JavaMail Session object represents a connection to a mail server. It is used to create email messages.

Message:

A Message object represents an email message. You set the sender, recipient, subject, and body of the email using this object.

Transport:

The Transport class is used to send the message.

Steps to Send Email:

Add Dependencies: Include the necessary JavaMail API dependency in your project. For example, with Maven:

Kode

    <dependency>

        <groupId>com.sun.mail</groupId>

        <artifactId>jakarta.mail</artifactId>

        <version>2.0.1</version>

    </dependency>

Configure Properties: Set up properties for the SMTP server, such as the host address, port, and authentication details.

Java

    Properties props = new Properties();

    props.put("mail.smtp.host", "smtp.example.com");

    props.put("mail.smtp.port", "587");

    props.put("mail.smtp.auth", "true");

    props.put("mail.smtp.starttls.enable", "true");

Create Session: Create a Session object using the properties and authentication.

Java

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

        protected PasswordAuthentication getPasswordAuthentication() {

            return new PasswordAuthentication("your_email@example.com", "your_password");

        }

    });

Create Message: Create a MimeMessage object and set the sender, recipient, subject, and body. 

Java

    Message message = new MimeMessage(session);

    message.setFrom(new InternetAddress("your_email@example.com"));

    message.setRecipients(Message.RecipientType.TO, InternetAddress.parse("recipient@example.com"));

    message.setSubject("Email Subject");

    message.setText("Email Body");

Send Message: Use the Transport class to send the message.

Java

    Transport.send(message);

Additional Considerations:

Attachments: Use MimeBodyPart and MimeMultipart to add attachments to emails.

HTML Content: Set the content type of the message to "text/html" to send HTML emails.

Gmail: For Gmail, you might need to enable "less secure apps" or use OAuth2 for authentication.

Spring Boot: Spring Boot provides a JavaMailSender to simplify email sending.

Email APIs: Consider using third-party email APIs for more advanced features.

By following these steps and using the JavaMail API, you can integrate email functionality into your Java applications.