Stating the box number is very important
To ensure that we can process your mail smoothly and correctly, it is important (and necessary) that your relations state the Postbox number and the addressee when they send mail to you.
Stating the Postbox number is important!
PriPost sorts the mail by Postbox number, because that number is unique for every customer. That is why it is important that the companies and relations that send mail to you mention the box number in the address. If the Postbox number is missing, we are forced to sort the mail by name (addressee/recipient). However, this entails considerably more work, which means that we are forced to charge extra costs per mail item where the box number is missing.
If it is not possible to mention a Postbox number, due to automated systems, we do not charge any extra costs for this. This is the case, for example, with PostNL’s relocation service. This only works with entering a zip code and house number and does not allow an extra field.
Companies where it is not possible to mention a Postbox number are:
- Verhuisservice PostNL
- Waternet
As you can see the list is very small. If you have found an authority where this is not possible, we would like to hear from you. If this is demonstrably indicated, we will also place this on the list above and no extra costs will be charged for sorting without a Postbox number.


Stating the Postbox number at the Chamber of Commerce
If you, as a company, association or foundation, want to change the correspondence address at the Chamber of Commerce, use one of our office addresses with the addition (aanvulling) “UNIT” + your box number (as an example Unit P365). So do not use the ‘toevoeging’ field but the ‘Aanvulling’ field.
To change the correspondence address at the Chamber of Commerce, you need a Rental Agreement Postal Address from PriPost. You can easily create and download these from the PriPortal (in the dashboard). Please note: with this Rental Agreement Postal Address you can only change your correspondence address and not your business address. To change a business address, you need a rental agreement from PriOffice. This is only available for business customers.

The correct mentioning of the Postbox number
The Postbox number can be stated in the address in various ways. Although it is preferable to state the Postbox number as a second address line, it may be mentioned anywhere else in the address. You are free to use a different designation such as ‘Unit’ or ‘Box’ prior to the Postbox number. This is optional and not mandatory (Exception is the location in Rotterdam where Unit 303 must always be stated prior to the box number).
A Postbox number consists always of 1 letter and 1 to 4 digits. For administrative reasons we always use 4 digits (leading zeros). However, this is not necessary. You could thus use P0365 or P365.