Digitise your postal invoice mailing.

Send your invoices online and let Pingen handle printing and delivery via PostNL — fully digital, fast, and reliable.

Faster payment

Stand out of the crowd by sending invoices by post. Physical invoices are more likely to capture your customers’ attention and encourage quick payment.

Invoice mailing service - invoice document

Show appreciation

As a company, you acknowledge your clients by investing time and money into postal invoicing. You strengthen customer relationships and loyalty.

Personal preference

Many people still prefer receiving invoices by post. Physical invoices provide a tangible, easy-to-file hard copy for archiving and record-keeping.

Avoid email chaos

Postal invoicing avoids issues like spam filters and overlooked emails, reducing the risk of missed invoices due to full inboxes or other email problems.

Send postal invoices, the Pingen way.

Forget printing, folding, and mailing yourself. With Pingen, sending invoices by post is fully automated and handled via PostNL.

Use existing invoices

Upload your PDF invoices through the WebApp, email, API, or integration – we’ll print and send them for you.

Document validation

Pingen automatically validates your invoices and recipient addresses to ensure optimal print results and avoid cost for undeliverable letters.

Payment slips

Pingen supports printing Swiss QR bills and German or Austrian SEPA payment slips, helping your postal invoices stand out even more!

Local print and delivery

We print and deliver locally via PostNL — ensuring fast, reliable, and environmentally friendly delivery across the Netherlands.

Expore send options

Pingen send overview with floating post logos

Track and manage

Next to freeing you from printing and posting, Pingen also provides a powerful dashboard as well as detailed tracking and status information for every invoice.

About letter tracking

Return mail handling

Undeliverable letters are automatically handled by Pingen, with all relevant return details provided digitally – eliminating the need to manually process returned mail.

How we handle returns

Email notification from Pingen about a returned mail

Enjoy the benefits of Pingen

Send invoices digitally

Sending invoices by post becomes a fully digital process with Pingen — simple and efficient.

Use invoicing tools

Send physical invoices directly from your accounting or invoicing software using our email integration.

Start small, grow big

With no minimum volume or monthly fees, Pingen gives you full flexibility to grow at your own pace.

Printing network

Invoices are printed and delivered locally by PostNL for reliable and cost-effective service.

Send invoices from your current workflow.

All integrations

"With our platform, your invoices are processed and printed securely on the same infrastructure used by leading banks and insurance companies – keeping your data safe at every step"

Sandro Kunz, co-founder and CEO of Pingen