wp_mail line break not working

Question

I have an interface to send e-mails through SMTP (I use the plug-in Postman SMTP).

I collect messages in the DB that I sent to someone depending on the results of an SQL request.

In the DB, I stored the messages using the char 
 for line breaks.

Here is the code (I replace e-mail addresses with xxx, but obviously I use my client's e-mail address in the real piece) :

$subject = $res->subject;
$message = utf8_encode( $msg );

$to = $res->url ;
$headers  = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=UTF-8' . "\r\n";
$headers .= 'From: XXX <[email protected]>' . "\r\n" .
  'Reply-To: [email protected]' . "\r\n";         

$sent = wp_mail($to, $subject , $message , $headers);

Everything works (I receive the right e-mail with proper encoding), however everything is sent on a single line (when there should be a line break each time there is a 
 in the database message). Oddly, there are no in the e-mail, they are just deleted from the message.

I also tried to add the following lines (on separate tests, obviously) :

$message = str_replace('
', "\r\n", $message);
$message = str_replace('&#13;', '<br />', $message);

But I get the same results.

Could you please help me sort this out ?

Answer 1

Modify the line that reads $headers .= 'Content-type: text/html; charset=UTF-8' . "\r\n"; to $headers .= 'Content-Type: text/html; charset=ISO-8859-1"; and then use <br /> for the line breaks.