The Netherlands

Albert Einsteinweg 4
8218 NH Lelystad
+31 85 023 9310

Verlengde Poolseweg 16 (Building B)
4818 CL Breda
+31 20 262 0839

Unifiedpost was founded in Belgium by our CEO, Hans Leybaert, in 2001 and since 22 September 2020 we are listed on Euronext Brussels.

Here you can read more about our history and acquisitions over the years.

Unifiedpost Group wants to become the leading cloud-based platform for SME business services built on “Documents”, “Identity” and “Payments” and help customers structure complex financial administrative processes by delivering simple, smart, digital solutions.

Unifiedpost Netherlands includes approximately 83 employees across 2 locations.

Our offering in The Netherlands





AgroBox will become Billtobox

Unifiedpost will soon replace all old eInvoicing platforms (Z invoice and AgroBox, formerly ZET solutions, now Unifiedpost) by the Billtobox platform. 

Billtobox - the digital link between accountants and entrepreneurs - is a collaboration platform that is already used by more than 1000 accountancy firms in the Benelux. The accountant/administration office plays an important role in 100% electronic accounting. Many farmers see their accountant as their most important advisor. Unifiedpost works closely with various accounting and accountancy firms to determine how they can optimally use electronic invoicing for their customers. 

Electronic invoicing via Billtobox is also very attractive for accountants. 


  • Collaborate online with the customer. 
  • Customer can easily upload invoices with, among other things, the Billtobox scan app. 
  • Processing and recognition of invoices will be automated. 
  • Option to make invoices available when booking via an accounting-vas link. 
  • Peak processing decreases because invoices are available earlier. 
  • The customer has access to a user-friendly online file and therefore no longer needs a paper file. 

AgroConnect invoices can also be easily converted to UBL and UBL invoices can be converted to AgroConnect XML if desired.


Fully certified, and compliant with all required privacy and security regulations, our Identity services provide secure platforms for online identification and onboarding in the Netherlands.

Z login

As a recognized provider of eHerkenning, we have been helping entrepreneurs for years with a secure choice for eHerkenning. The right level of security, the correct authorization and solutions for management are just as important to us as the price. With Z login you will find what you need quickly and easily.

More info

News & Events

Unifiedpost Group announces its intention to float on Euronext Brussels

La Hulpe (Belgium), 1 September 2020 — Today, Unifiedpost Group SA/NV (the “Company” and, together with its consolidated subsidiaries, “Unifiedpost Group”) announces its intention to launch a private placement to qualified investors and high net worth individuals[1] only (the “Private Placement”), followed by a listing of its Shares on the regulated market of Euronext Brussels (the “Listing”).

Continue reading

Unifiedpost Group expands business platform Billtobox with payment functionality

One of Europe’s leading Fintech firms, Unifiedpost Group, is enabling SMEs using their Billtobox platform to start paying and receiving payments within the platform. “To make administrative and financial processes  simpler and smarter, Billtobox customers will now be able to manage invoicing, digital archiving of documents, accounting and payments in a single platform,” said Unifiedpost Payments CEO Arthur Paijens. 

Starting today, SMEs using Unifiedpost Group’s Billtobox platform will be able to opt into a service that enables them to manage payments within the platform. Following the recent implementation of the PSD2-directive, Unifiedpost Group, via its licensed payment institution Unifiedpost Payments, is able to offer Billtobox clients payment solutions within the Billtobox platform without the direct involvement of a bank. Billtobox is a digital platform that allows SMEs to manage invoices and other documents, and to easily share them with their accountant.

Continue reading

eHerkenning and Billtobox

Entrepreneurs with eHerkenning can use Billtobox for free. It does not matter by which organization you have joined eHerkenning, via the button below you can easily register for free for Billtobox with eHerkenning.

Continue reading

You're in good company

"With Z login I can log in safely, for example at RVO. Our company is located in a rural area, where the range for mobile phones is not always optimal. The great thing about Z login is that I can also log in with an OTP device, so that I can also access the relevant information when my reach is poor. And because we are an LTO member, I also get an extra discount!"

Eefje Meihuizen-Kuyt - Agricultural Entrepeneur & District Counsel FrieslandCampina


"With the Z login Management module, we keep an overview of all departments and divisions. For us, it is a tool to do our work well. With so many offices, figuring out who to authorize for what could be quite complicated. However, thanks to the professional support from customer service it was quickly arranged and we can now manage it ourselves."

Marcel Koppenol - Facilicom Group

Add picture

Add picture

“Thanks to Billtobox, we give our customers exactly what they want: maximum care.“

Xavier Delattre - Delattre

Get in touch

By clicking submit below, you consent to allow Unifiedpost Group to store and process the personal information submitted above to provide you the content requested. For more information, please consult our privacy policy.