How can JavaMail API be utilized on Android?

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The JavaMail API can be utilized on Android using the following steps:

1. Add JavaMail library in the build.gradle file of your Android project.

dependencies {
   compile 'com.sun.mail:android-mail:1.5.5'
   compile 'com.sun.mail:android-activation:1.5.5’
}

1. Create a JavaMail session object by setting the mail properties such as host, port, authentication, and protocol.

Properties props = new Properties();
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "587");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.ssl.trust", "smtp.gmail.com");

Session session = Session.getInstance(props, new javax.mail.Authenticator() {
  protected PasswordAuthentication getPasswordAuthentication() {
    return new PasswordAuthentication("your_email@gmail.com", "your_password");
  }
});

1. Create a MimeMessage object and set the message content, recipient, subject, and sender.

MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress("your_email@gmail.com"));
message.addRecipient(Message.RecipientType.TO, new InternetAddress("recipient_email@example.com"));
message.setSubject("Test email from Android");
message.setText("Hello, this is a test email from Android!");

1. Use the Transport class to send the MimeMessage.

Transport.send(message);

Note: Make sure to perform network operations (such as sending emails) on a separate thread or using AsyncTask/Handler to avoid blocking the UI thread.