strange characters(?) added to the end of my subject text

[sanjay kumar gupta]

I have a problem with my java code sending email to users. There is some problem with the encoding of the email as When the email arrives to email account the subject line($subject) has encoding problems as has strange characters(?) added to the end of my subject text.

The email message content itself is fine just the subject line(?) I have searched all over but cant find,after using Unicode and content type as text/html mail body have no problem with special character
(ó) but same fix is not working for subject line.

I have a class that sends an email with javamail, with a text like
this one in subject :

"Estimado Iván Escobedo:


The problem is that when the mail arrives to its destination, it
arrives this way:

"Estimado Iv?n Escobedo:


All the á, é, í, ó, ú, etc special characters are replaced with "?".

What could be the problem and how to resolve it?

Thanks
Please advice

[sanjay kumar gupta]

I got Fix for this issue.extra char can be added in subject by using below code when we are setting subject :

mailNotificationHelper.setSubject((MimeUtility.encodeText(SubjectText, "ISO-8859-15", "Q")));