funzione main() errore se mail in HTML

[0-c00l]

Prova così:

 $headers  = 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$headers .= 'From: '.$email . "\r\n"; 

O così:

 $headers  = 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$headers .= 'From: '.$email.'' . "\r\n";