compose html body with variables

Hello, I'm trying to compose the body of an html email to use with the mail() function. I'm running into problem because I'm not sure how to quote the multi-line body. Here is what I have: $body = "

              echo "Hello, here is your quote from Freight Services.<br /><br />";
              echo "Shipping from: <tab> $origin to $destination<br />";
               echo "<br>";
               echo "Shipping subtotal $" . number_format($subtotal,2);
               echo "<br>";
               echo "<br>";
               echo "Freight charges $" . number_format($freightCharges,2);
               echo "<br>";
               echo "Fuel surcharge $" . number_format($fuelSurcharge,2);
               echo "<br>";
               echo "Pickup and delivery $" . number_format($pickupDelivery,2);
               echo "<br>";
               echo "<br>";
               echo "Miscellaneus costs (e.g. liftgates, etc.) below $" . number_format($miscCost,2);
               echo "<br>";
               echo "<br>";
               if ($liftgatePickup == "50"){
                       echo "Adding liftgate on pickup $50.00";
                       echo "<br>";
               }
               if ($liftgateDelivery == "50"){
                       echo "Adding liftgate on delivery $50.00";
                       echo "<br>";
               }
               if ($spectimeDelivery == "35"){
                       echo "Adding cost of specific-time delivery $35.00";
                       echo "<br>";
               }
               if ($conventionDelivery == "35"){
                       echo "Adding cost of convention delivery $35.00";
                       echo "<br>";
               }
               if ($dreyageWait != 0){
                       echo "Adding cost for wait $" . $dreyageWait;
                       echo "<br>";
               }
               if ($insideDelivery == "25"){
                       echo "Adding cost for inside delivery $25.00";
                       echo "<br>";
               }
               if ($notifyClient == "10"){
                       echo "Adding cost for client notification $10.00";
                       echo "<br>";
               }
               echo "Total cost is $" . number_format($totalcost,2);
               echo "<br /><br />";

               echo "<a href=\"www.foo.net\">foo Services</a>";

              $subject = "Online Freight Quote";

              mail($email, $subject, $body, "From: info@foo.net\r\nReturn-Path: foo@freightservices.net\r\nReply-To: info@foo.net\r\nX-Mailer: PHP 4.x\r\nMIME-Version: 1.0\r\nContent-Type: text/html; charset=iso-8859-1\r\n");

If anyone could assist me I'd appreciate it very much, Matt