I understand that your pricing is a simple per-agent fee, but my company will still need a formal invoice to raise a purchase order. Could you send me one?
If you have an existing helpdesk, including a Cloud trial, you can get an invoice by going to the billing area from within the admin interface. Click on the $ icon at the lower left. Enter or confirm your details and click "Pay by invoice". You will then be able to download a PDF invoice.
To get a quote for a new On-Premise license, go to www.deskpro.com/start/, select the license you want to buy and your details.
At the Billing Details step, click on "Purchase Order / Check / Wire". You will then be able to download a PDF invoice.