Code to reproduce with PHPMailer


date_default_timezone_set('Europe/Vienna');
$mail = new PHPMailer(true);   
$mail->setLanguage("de");  
// Server-Settings
$mail->IsSMTP();    
$mail->Host     = $SMTPServer;
$mail->SMTPAuth = true;
$mail->Username = $SMTPUsername;
$mail->Password = $SMTPPassword;
$mail->SMTPSecure = 'tls';
$mail->Port = 587;
$mail->From     = $emailAbsenderEmail;      
$mail->FromName = $emailAbsenderName;
$mail->AddAddress($emailEmpfaenger); 
$mail->AddCC($emailCC);
$mail->AddBCC($emailBCC);
$mail->AddAttachment($datei);
$mail->AddAttachment($dateiAGB);

$mail->IsHTML(true); 
$mail->Subject = $emailBetreff; 
$mail->AltBody = "HTML Emails not supported by your Client.";
$mail->Body = 'Test mit ÜmlÄuten Äber pässt;';
$mail->CharSet = 'UTF-8';     
$mail->Send();