在电子邮件php的文本中添加新换行符

I am using the following code

$message = $mess0 . "</br>" . $mess1 . "</br>" . $mess2 . "</br>" .  $mes1 . "</br></br>" . $mes2 . "</br>" . $mes23 . "</br></br>" . $mes3  . "</br></br>" .  $mes4 . "</br>" . $mes5 . "</br>" . $mes6 . "</br>" . $mes7 . "</br>" .  $mes8 . "</br>" .  $mes9 .  "</br></br>" . $mes10 ;

$message = "<html><body><p>".$message."</p></body></html>"; 

$this->Mail($storeEmail, $subject, $message);

    function Mail($to, $subject, $message) 
    {
        $headers  = 'MIME-Version: 1.0' . "
";
        $headers .= 'Content-type: text/html; charset=iso-8859-1' . "
";
        $headers .= 'From: The Vow Engagement Ring Finder <thevow.engagement@gmail.com>' . "
";

        // Mail it
        if(!mail($to, $subject, $message, $headers)) {
            throw new Exception('There was a problem trying to send an email.');
        }
    }

The problem is all is i get is one paragraph. I have added <br>s but its like they don't work. The mail I get is simple paragraph without any new line feeds.

Mistake in <br /> tags

$message = $mess0 . "</br>" . $mess1...
                     ^^^^^^

Replace all </br> with <br />

It will not work. You have to use for line breaks. Also try <br />.