How do I send mail with both plain text as well as HTML text so that each mail reader can choose the format appropriate for it?

Question

From http://www.oracle.com/technetwork/java/faq-135477.html#sendmpa:

You\'ll want to send a MIME multipart/alternative message. You construct such a mes

Answer 1

This is a part of my own code:

final Message msg = new MimeMessage(session);
msg.setFrom(new InternetAddress(senderAddress, senderDisplayName));
msg.addRecipient(Message.RecipientType.TO,
        new InternetAddress(m.getRecipient(), m.getRecipientDisplayName()));
msg.setSubject(m.getSubject());
// Unformatted text version
final MimeBodyPart textPart = new MimeBodyPart();
textPart.setContent(m.getText(), "text/plain"); 
// HTML version
final MimeBodyPart htmlPart = new MimeBodyPart();
htmlPart.setContent(m.getHtml(), "text/html");
// Create the Multipart.  Add BodyParts to it.
final Multipart mp = new MimeMultipart("alternative");
mp.addBodyPart(textPart);
mp.addBodyPart(htmlPart);
// Set Multipart as the message's content
msg.setContent(mp);
LOGGER.log(Level.FINEST, "Sending email {0}", m);
Transport.send(msg);

Where m is an instance of my own class.