title: MimeMessage body longer 76 chars
body: <p>I'm able to create a .eml file with javax.mail library, but if the body is longer than 76 characters it's broken in more lines.
  The problem is than opening the .eml file with Windows Live Mail the '=' char appears in the email body in the corrispondence of the 76 character and the text is on multiline.</p>
  
  <p>Could anyone help me please?
  Thank you</p>
  
  <p>-Antonio</p>
  
  <p>This is the .eml example file:</p>
  
  <pre><code>X-Unsent: 1
  Message-ID: &lt;2037894577.5.1365866504487.JavaMail.Nunziante@Nunziante-TOSH&gt;
  Subject: Comunicazione Contenzioso Spedizione 8092255513 del 09-04-2013
  MIME-Version: 1.0
  Content-Type: multipart/mixed; 
  boundary="----=_Part_4_1091659763.1365866499167"
  
  ------=_Part_4_1091659763.1365866499167
  Content-Type: text/plain; charset=UTF-8
  Content-Transfer-Encoding: quoted-printable
  
  The Stratford Bust, located on the wall of the chancel of Holy Trinity Chur=
  ch at Stratford-upon-Avon, is the oldest and, along with the Droeshout Port=
  rait, most credible of all the known images of Shakespeare. But there are m=
  any representations of the Bard that have been handed down throughout the c=
  enturies, each with its own fascinating story to tell.. Responsabilit=C3=A0=
  : Generica
  
  
  ------=_Part_4_1091659763.1365866499167--
  </code></pre>
  
  <p>and this is my current code:</p>
  
  <pre><code>Message message = new MimeMessage(javax.mail.Session.getInstance(System.getProperties()));
  message.setFrom(new InternetAddress(from));
  message.setRecipients(Message.RecipientType.TO, getAddress(to));
  message.setSubject(subject);
  Multipart multipart = new MimeMultipart();
  MimeBodyPart content = new MimeBodyPart();
  multipart.addBodyPart(content);
  content.setText(body);
  message.setContent(multipart);
  FileOutputStream fos = new FileOutputStream(emlFile);
  message.writeTo(fos);
  fos.close();
  </code></pre>
  
  <p>When I open the eml file, the message is:</p>
  
  <p>The Stratford Bust, located on the wall of the chancel of Holy Trinity Chur=h at Stratford-upon-Avon, is the oldest and, along with the Droeshout Port=ait, most credible of all the known images of Shakespeare. But there are m=ny representations of the Bard that have been handed down throughout the c=nturies, each with its own fascinating story to tell.. Responsabilità= Generica</p>
  
  <p>What I have to set in order to obtain the exact body?
  thanks</p>