fatto anche così:

Codice PHP:
    $msg="<html xmlns=\"http://www.w3.org/1999/xhtml\">";
    $msg.="<head>";
    $msg.="<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />";
    $msg.="<link href=\"http://www.failaffare.com/network/style/email.css\" rel=\"stylesheet\" />";
    $msg.="</head>";
    $msg.="<body>";
    $msg.="<div id=\"logo\"><img src=\"http://www.failaffare.com/network/images/document/logo.png\" /></div>";
    $msg.="<div id=\"topbar\">$object</div>";
    $msg.="<div id=\"content\">$text</div>";
    $msg.="<div id=\"bottombar\">";
    $msg.="<span class=\"copyright\">&copy; ".date("Y")." Network srl. Tutti i diritti riservati.</span>";
    $msg.="</div>";
    $msg.="</body>";
    $msg.="</html>"; 
ma nulla continua a non formattarmi la pagina.