Introducing e-invoicing [March 24, 2015] In the context of ongoing professionalization, Q-Potato will digitize all incoming invoices starting April 1, 2015. Paper invoices will become a thing of the past in the offices in Lemmer. By processing invoices electronically, we will be able to improve and expedite internal procedures. We request our suppliers to no longer send paper invoices by post, but instead e-mail them to invoice@qpotato.com.