How to add e-mail client in pdf invoice [PS 1.3]

[Barmunk]

Tell me please, how to add e-mail client in pdf invoice.

 

I added the code:

$pdf->Cell($width, 10, Tools::iconv('utf-8', self::encoding(), $customer->email).' '.Tools::iconv('utf-8', self::encoding(), $customer->email), 0, 'L');

 

but it is not displayed.

[Barmunk]

no ideas?

[Barmunk]

$customer = new Customer(self::$order->id_customer);
$pdf->Cell($width, 10, Tools::iconv('utf-8', self::encoding(), $customer->email).' '.Tools::iconv('utf-8', self::encoding(), $customer->email), 0, 'L');