title: javax.mail.internet.InternetAddress UTF-8 in local-part
body: <p>I'm searching for a solution to send a mail to UTF-8 encoded mail-addresses. The domain-part is no problem, because I can encode it using punycode and send it then.</p>
  
  <p>But how do I handle the local-part of a mail-address? For example I want to send a mail to müller@testdomain.com? <code>javax.mail.internet.InternetAddress</code> says, that this is not a valid address.</p>
  
  <p>Any suggestions?</p>