Not able to see marquee tag in javamail

Question

I am using content type as "text/html", but when we send mail <marquee> tag gets dropped , not able to see the effect.
I am using this part of the code :
msg.setDataHandler(new DataHandler(
new ByteArrayDataSource(sb.toString(), contentType)));
where contentType is "text/html"
Multipart multipart = new MimeMultipart();
multipart.addBodyPart(messageBodyPart);
msg.setContent(multipart);
String fromAddress = getProperty("email.fromaddress");
InternetAddress FROM = new InternetAddress(fromAddress);
msg.setFrom(FROM);
InternetAddress[] addressto = {new InternetAddress(toEmailAddress)};
msg.setRecipients(Message.RecipientType.TO, addressto);
msg.setSubject("Test");
Transport.send(msg);
Please let me know changes required to have <marquee> working

Answer 1

You mean, when you display that message in some (unnamed) e-mail client, it doesn't display the <marquee> tag the way a browser might?
I don't find that surprising, given that it isn't standard HTML. But in any case you are complaining about a feature of that unnamed e-mail client. You could ask the people who wrote that client to implement the <marquee> tag if you liked. No doubt that would amuse them greatly, but I doubt they would do it.