title: Charset of attachment file name
body: <p>Good Day,</p>
  
  <p>I'm sending an email with an attachement via SMTP with PHPMailer.</p>
  
  <p>The charset in the mail is set to utf-8, but when I send an attachement with an special char like 'März' for example, the client gets an attachement with an broken charset like: M�rz.</p>
  
  <p>My Code Example:</p>
  
  <pre><code>$mail = new PHPMailer();
  $mail-&gt;IsSMTP();
  $mail-&gt;CharSet = 'UTF-8';
  
  $mail-&gt;Host = "host ip";
  $mail-&gt;SMTPDebug = 0;
  $mail-&gt;SMTPAuth = true;
  $mail-&gt;Port = 25;
  $mail-&gt;Username = "user";
  $mail-&gt;Password = "pw";
  
  $mail-&gt;setFrom('send@host.de', 'Host');
  $mail-&gt;addAddress("client@mail.de");
  $mail-&gt;Subject = 'Subject';
  $mail-&gt;Body = "Email Content";
  $mail-&gt;AltBody = 'Alternative Email Content';
  
  $mail-&gt;AddAttachment("example/file_märz.pdf");
  </code></pre>
  
  <p>Am I doing something wrong or is there any fix for this problem?</p>