$recipient = "example@test.xom";


$subject = "$aanvraag - $naam $voornaam";

// Build the email content.
$email_content  = "Hey!nn";
$email_content .= "Gevevens:n$naam $voornaamn$straat, $postcode $stadn$email, $phonen$reknrnn";
$email_content .= "Voertuig(en nummerplaat): $wagenn";
$email_content .= "Opties: $optien";
$email_content .= "Afhaalpunt: $afhaalpuntn";
$email_content .= "Terugbrengpunt: $terugbrengpuntnn";
$email_content .= "Start huur: $datumvann";
$email_content .= "Einde huur: $datumtotn";
$email_content .= "Eventuele btw-nummer: $btwnrn";
$email_content .= "$aanvraagn";

// Build the email headers.
$email_headers = "From: $naam $voornaam <$email>";

// Send the email.
if (mail($recipient, $subject, $email_content, $email_headers)) {
    // Set a 200 (okay) response code.
    http_response_code(200);
    header("location:contact.php?verzonden=true");
    exit();
} else {
    // Set a 500 (internal server error) response code.
    http_response_code(500);
    header("location:contact.php?verzonden=not");
    exit();
}